please please help me. my math teacher gives us like really hard questions every week. i need help :(
2007-11-29 11:31:25 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Well, one-fifth of all numbers are divisible by five.
There is nothing special about 3-digit numbers, so if you choose one randomly, there is a 20% chance that it will be divisible by 5.
Do you agree?
2007-11-29 11:35:44 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A number is a multiple of 5 if the last digit is either 0 or 5. There are 10 possible values for the last digit (0 - 9). So the probability is 2/10 or 1/5.
2007-11-29 11:35:55 · answer #2 · answered by Tom :: Athier than Thou 6 · 0⤊ 0⤋
the entire form of three-digit numbers could be 9 x 10 x 10 (9 for the 1st digit simply by fact it cant be 0) = 900 the quantity of numbers that are a dissimilar of five are 9 x 10 x2 (2 simply by fact it has to end in the two a 5 or 0) = a hundred and eighty. So your answer is a hundred and eighty/900 = a million/5
2016-10-18 09:03:59 · answer #3 · answered by Anonymous · 0⤊ 0⤋
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
I would say 2 out of 10 or
4 out of 20
or 20%.
2007-11-29 11:36:31 · answer #4 · answered by Steve B 6 · 0⤊ 0⤋
200 of the 1000 events will be a multiple of 5.
2007-11-29 11:38:12 · answer #5 · answered by jimmymae2000 7 · 0⤊ 0⤋
133
2007-11-29 11:35:05 · answer #6 · answered by semiproslacker 2 · 0⤊ 0⤋