and can you describe how to count it? thank you, and beg your sorry if my english was bad, because i'm the personnel of Bad English band, hahaha, just kidding. it's because i'm just a simply stupidman.
2006-06-11 17:46:50 · 6 answers · asked by stupidman 3 in Science & Mathematics ➔ Mathematics
Find the probability of the complement occurring and then subtract that from 1.
The complement would be that an odd occurs 0 or 1 times.
P(odd) = .5 and P(even) = .5
P(0 odds) = C(10,0)(.5)^0 (.5)^10 = .0009765625
P(1 odd) = C(10,1) (.5)^1 (.5)^9 = .009765625
.0009765625 + .009765625 = .0107421875
1 - .0107421875 = .9892578125
2006-06-11 17:55:46 · answer #1 · answered by MsMath 7 · 8⤊ 0⤋
since there are 6 sides and 3 of the numbers are odd, there is a 50% chance of an odd number coming up on any roll. This doesn't mean that for every 10 rolls 5 would be an odd number, but if you rolled ten times a hundred times over, the average number of times an odd number came up would be close to 50%.
2006-06-12 00:50:49 · answer #2 · answered by xtowgrunt 6 · 0⤊ 0⤋
Since half the numbers on the dice are odd, the chances of getting an odd number on a given toss = 0.5
You are interested in the probability that an odd number comes up at least 2 times in 10 tosses. To do this, it's easier to find the probability that an odd no. never appears, or appears only once, and then subtract this value from 1 to determine the prob that at least two odd nos. come up.
The prob that an odd no. does not appear in 10 tosses = (0.5)^10
prob that only one odd no. comes up = 10*(0.5)^10
Add these two together to get the probability that no more than one odd no appears = 11*(0.5)^10
So, the probability of at least two odds in 10 tosses = 1- 11*(0.5)^10 = 0.98925.. Rounding off means there is about a 99% chance that at least two odd numbers will appear.
2006-06-12 01:19:18 · answer #3 · answered by Jimbo 5 · 1⤊ 0⤋
assuming six-sided die:
possibilities are equal even or odd on each throw
2^10possibilities in a 10 digit binary. = 1024
11 possibilities do not meet requirements:
0000000000
0000000001
0000000010
0000000100
0000001000
0000010000
0000100000
0001000000
0010000000
0100000000
1000000000
Out of 1024 total possibilities:
0000000000-
0000000001-
0000000010-
0000000011
0000000100-
0000000101
0000000110
0000000111
0000001000-
0000001001
0000001010
0000001011
0000001100
0000001101
0000001110
0000001111
0000010000-
0000010001
0000010010
0000010011
0000010100
0000010101
0000010110
0000010111
0000011000
0000011001
0000011010
0000011011
0000011100
0000011101
0000011110
0000011111
0000100000-
0000100001
0000100010
0000100011
0000100100
0000100101
0000100110
0000100111
0000101000
0000101001
0000101010
0000101011
0000101100
0000101101
0000101110
0000101111
0000110000
0000110001
0000110010
0000110011
0000110100
0000110101
0000110110
0000110111
0000111000
0000111001
0000111010
0000111011
0000111100
0000111101
0000111110
0000111111
0001000000-
0001000001
0001000010
0001000011
0001000100
0001000101
0001000110
0001000111
0001001000
0001001001
0001001010
0001001011
0001001100
0001001101
0001001110
0001001111
0001010000
0001010001
0001010010
0001010011
0001010100
0001010101
0001010110
0001010111
0001011000
0001011001
0001011010
0001011011
0001011100
0001011101
0001011110
0001011111
0001100000
0001100001
0001100010
0001100011
0001100100
0001100101
0001100110
0001100111
0001101000
0001101001
0001101010
0001101011
0001101100
0001101101
0001101110
0001101111
0001110000
0001110001
0001110010
0001110011
0001110100
0001110101
0001110110
0001110111
0001111000
0001111001
0001111010
0001111011
0001111100
0001111101
0001111110
0001111111
0010000000-
0010000001
0010000010
0010000011
0010000100
0010000101
0010000110
0010000111
0010001000
0010001001
0010001010
0010001011
0010001100
0010001101
0010001110
0010001111
0010010000
0010010001
0010010010
0010010011
0010010100
0010010101
0010010110
0010010111
0010011000
0010011001
0010011010
0010011011
0010011100
0010011101
0010011110
0010011111
0010100000
0010100001
0010100010
0010100011
0010100100
0010100101
0010100110
0010100111
0010101000
0010101001
0010101010
0010101011
0010101100
0010101101
0010101110
0010101111
0010110000
0010110001
0010110010
0010110011
0010110100
0010110101
0010110110
0010110111
0010111000
0010111001
0010111010
0010111011
0010111100
0010111101
0010111110
0010111111
0011000000
0011000001
0011000010
0011000011
0011000100
0011000101
0011000110
0011000111
0011001000
0011001001
0011001010
0011001011
0011001100
0011001101
0011001110
0011001111
0011010000
0011010001
0011010010
0011010011
0011010100
0011010101
0011010110
0011010111
0011011000
0011011001
0011011010
0011011011
0011011100
0011011101
0011011110
0011011111
0011100000
0011100001
0011100010
0011100011
0011100100
0011100101
0011100110
0011100111
0011101000
0011101001
0011101010
0011101011
0011101100
0011101101
0011101110
0011101111
0011110000
0011110001
0011110010
0011110011
0011110100
0011110101
0011110110
0011110111
0011111000
0011111001
0011111010
0011111011
0011111100
0011111101
0011111110
0011111111
0100000000-
0100000001
0100000010
0100000011
0100000100
0100000101
0100000110
0100000111
0100001000
0100001001
0100001010
0100001011
0100001100
0100001101
0100001110
0100001111
0100010000
0100010001
0100010010
0100010011
0100010100
0100010101
0100010110
0100010111
0100011000
0100011001
0100011010
0100011011
0100011100
0100011101
0100011110
0100011111
0100100000
0100100001
0100100010
0100100011
0100100100
0100100101
0100100110
0100100111
0100101000
0100101001
0100101010
0100101011
0100101100
0100101101
0100101110
0100101111
0100110000
0100110001
0100110010
0100110011
0100110100
0100110101
0100110110
0100110111
0100111000
0100111001
0100111010
0100111011
0100111100
0100111101
0100111110
0100111111
0101000000
0101000001
0101000010
0101000011
0101000100
0101000101
0101000110
0101000111
0101001000
0101001001
0101001010
0101001011
0101001100
0101001101
0101001110
0101001111
0101010000
0101010001
0101010010
0101010011
0101010100
0101010101
0101010110
0101010111
0101011000
0101011001
0101011010
0101011011
0101011100
0101011101
0101011110
0101011111
0101100000
0101100001
0101100010
0101100011
0101100100
0101100101
0101100110
0101100111
0101101000
0101101001
0101101010
0101101011
0101101100
0101101101
0101101110
0101101111
0101110000
0101110001
0101110010
0101110011
0101110100
0101110101
0101110110
0101110111
0101111000
0101111001
0101111010
0101111011
0101111100
0101111101
0101111110
0101111111
0110000000
0110000001
0110000010
0110000011
0110000100
0110000101
0110000110
0110000111
0110001000
0110001001
0110001010
0110001011
0110001100
0110001101
0110001110
0110001111
0110010000
0110010001
0110010010
0110010011
0110010100
0110010101
0110010110
0110010111
0110011000
0110011001
0110011010
0110011011
0110011100
0110011101
0110011110
0110011111
0110100000
0110100001
0110100010
0110100011
0110100100
0110100101
0110100110
0110100111
0110101000
0110101001
0110101010
0110101011
0110101100
0110101101
0110101110
0110101111
0110110000
0110110001
0110110010
0110110011
0110110100
0110110101
0110110110
0110110111
0110111000
0110111001
0110111010
0110111011
0110111100
0110111101
0110111110
0110111111
0111000000
0111000001
0111000010
0111000011
0111000100
0111000101
0111000110
0111000111
0111001000
0111001001
0111001010
0111001011
0111001100
0111001101
0111001110
0111001111
0111010000
0111010001
0111010010
0111010011
0111010100
0111010101
0111010110
0111010111
0111011000
0111011001
0111011010
0111011011
0111011100
0111011101
0111011110
0111011111
0111100000
0111100001
0111100010
0111100011
0111100100
0111100101
0111100110
0111100111
0111101000
0111101001
0111101010
0111101011
0111101100
0111101101
0111101110
0111101111
0111110000
0111110001
0111110010
0111110011
0111110100
0111110101
0111110110
0111110111
0111111000
0111111001
0111111010
0111111011
0111111100
0111111101
0111111110
0111111111
1000000000-
1000000001
1000000010
1000000011
1000000100
1000000101
1000000110
1000000111
1000001000
1000001001
1000001010
1000001011
1000001100
1000001101
1000001110
1000001111
1000010000
1000010001
1000010010
1000010011
1000010100
1000010101
1000010110
1000010111
1000011000
1000011001
1000011010
1000011011
1000011100
1000011101
1000011110
1000011111
1000100000
1000100001
1000100010
1000100011
1000100100
1000100101
1000100110
1000100111
1000101000
1000101001
1000101010
1000101011
1000101100
1000101101
1000101110
1000101111
1000110000
1000110001
1000110010
1000110011
1000110100
1000110101
1000110110
1000110111
1000111000
1000111001
1000111010
1000111011
1000111100
1000111101
1000111110
1000111111
1001000000
1001000001
1001000010
1001000011
1001000100
1001000101
1001000110
1001000111
1001001000
1001001001
1001001010
1001001011
1001001100
1001001101
1001001110
1001001111
1001010000
1001010001
1001010010
1001010011
1001010100
1001010101
1001010110
1001010111
1001011000
1001011001
1001011010
1001011011
1001011100
1001011101
1001011110
1001011111
1001100000
1001100001
1001100010
1001100011
1001100100
1001100101
1001100110
1001100111
1001101000
1001101001
1001101010
1001101011
1001101100
1001101101
1001101110
1001101111
1001110000
1001110001
1001110010
1001110011
1001110100
1001110101
1001110110
1001110111
1001111000
1001111001
1001111010
1001111011
1001111100
1001111101
1001111110
1001111111
1010000000
1010000001
1010000010
1010000011
1010000100
1010000101
1010000110
1010000111
1010001000
1010001001
1010001010
1010001011
1010001100
1010001101
1010001110
1010001111
1010010000
1010010001
1010010010
1010010011
1010010100
1010010101
1010010110
1010010111
1010011000
1010011001
1010011010
1010011011
1010011100
1010011101
1010011110
1010011111
1010100000
1010100001
1010100010
1010100011
1010100100
1010100101
1010100110
1010100111
1010101000
1010101001
1010101010
1010101011
1010101100
1010101101
1010101110
1010101111
1010110000
1010110001
1010110010
1010110011
1010110100
1010110101
1010110110
1010110111
1010111000
1010111001
1010111010
1010111011
1010111100
1010111101
1010111110
1010111111
1011000000
1011000001
1011000010
1011000011
1011000100
1011000101
1011000110
1011000111
1011001000
1011001001
1011001010
1011001011
1011001100
1011001101
1011001110
1011001111
1011010000
1011010001
1011010010
1011010011
1011010100
1011010101
1011010110
1011010111
1011011000
1011011001
1011011010
1011011011
1011011100
1011011101
1011011110
1011011111
1011100000
1011100001
1011100010
1011100011
1011100100
1011100101
1011100110
1011100111
1011101000
1011101001
1011101010
1011101011
1011101100
1011101101
1011101110
1011101111
1011110000
1011110001
1011110010
1011110011
1011110100
1011110101
1011110110
1011110111
1011111000
1011111001
1011111010
1011111011
1011111100
1011111101
1011111110
1011111111
1100000000
1100000001
1100000010
1100000011
1100000100
1100000101
1100000110
1100000111
1100001000
1100001001
1100001010
1100001011
1100001100
1100001101
1100001110
1100001111
1100010000
1100010001
1100010010
1100010011
1100010100
1100010101
1100010110
1100010111
1100011000
1100011001
1100011010
1100011011
1100011100
1100011101
1100011110
1100011111
1100100000
1100100001
1100100010
1100100011
1100100100
1100100101
1100100110
1100100111
1100101000
1100101001
1100101010
1100101011
1100101100
1100101101
1100101110
1100101111
1100110000
1100110001
1100110010
1100110011
1100110100
1100110101
1100110110
1100110111
1100111000
1100111001
1100111010
1100111011
1100111100
1100111101
1100111110
1100111111
1101000000
1101000001
1101000010
1101000011
1101000100
1101000101
1101000110
1101000111
1101001000
1101001001
1101001010
1101001011
1101001100
1101001101
1101001110
1101001111
1101010000
1101010001
1101010010
1101010011
1101010100
1101010101
1101010110
1101010111
1101011000
1101011001
1101011010
1101011011
1101011100
1101011101
1101011110
1101011111
1101100000
1101100001
1101100010
1101100011
1101100100
1101100101
1101100110
1101100111
1101101000
1101101001
1101101010
1101101011
1101101100
1101101101
1101101110
1101101111
1101110000
1101110001
1101110010
1101110011
1101110100
1101110101
1101110110
1101110111
1101111000
1101111001
1101111010
1101111011
1101111100
1101111101
1101111110
1101111111
1110000000
1110000001
1110000010
1110000011
1110000100
1110000101
1110000110
1110000111
1110001000
1110001001
1110001010
1110001011
1110001100
1110001101
1110001110
1110001111
1110010000
1110010001
1110010010
1110010011
1110010100
1110010101
1110010110
1110010111
1110011000
1110011001
1110011010
1110011011
1110011100
1110011101
1110011110
1110011111
1110100000
1110100001
1110100010
1110100011
1110100100
1110100101
1110100110
1110100111
1110101000
1110101001
1110101010
1110101011
1110101100
1110101101
1110101110
1110101111
1110110000
1110110001
1110110010
1110110011
1110110100
1110110101
1110110110
1110110111
1110111000
1110111001
1110111010
1110111011
1110111100
1110111101
1110111110
1110111111
1111000000
1111000001
1111000010
1111000011
1111000100
1111000101
1111000110
1111000111
1111001000
1111001001
1111001010
1111001011
1111001100
1111001101
1111001110
1111001111
1111010000
1111010001
1111010010
1111010011
1111010100
1111010101
1111010110
1111010111
1111011000
1111011001
1111011010
1111011011
1111011100
1111011101
1111011110
1111011111
1111100000
1111100001
1111100010
1111100011
1111100100
1111100101
1111100110
1111100111
1111101000
1111101001
1111101010
1111101011
1111101100
1111101101
1111101110
1111101111
1111110000
1111110001
1111110010
1111110011
1111110100
1111110101
1111110110
1111110111
1111111000
1111111001
1111111010
1111111011
1111111100
1111111101
1111111110
1111111111
1013 in 1024 possibilities or 98.92578125%
2006-06-12 01:14:30 · answer #4 · answered by Anonymous · 1⤊ 0⤋
6 sides divided by 2 is 3.........im sorry i dont know
2006-06-12 00:49:01 · answer #5 · answered by Anonymous · 0⤊ 0⤋
99%
2006-06-12 02:49:40 · answer #6 · answered by Chie 5 · 0⤊ 0⤋