If a lock has a 4-digit combonation needed to unlock and the numbers can be 0-to-9 (for example...1-2-3-4...is one possible combination to the lock).How many different possible combinations are there? and Is there anyway to get a list of all these combinations without having to handwrite them?
2006-07-01 13:22:14 · 15 answers · asked by phoebedapup 1 in Science & Mathematics ➔ Mathematics
There would be 10,000 possible combinations.
1st combo is 0000
2nd combo is 0001
etc. until
10,000th combo is 9999
Best way to list them all without handwriting would be to use Excell, have cell #1 equal 0000, cell #2 0001, then drag down and have it fill in the next series of numbers. It shouldn't be too hard.
Good Luck!
2006-07-01 13:28:33 · answer #1 · answered by bbyhtguy 4 · 0⤊ 0⤋
The number of combinations is 10X10X10X10 because any one of the 10 digits from 0-9 can be in any one of the 4 digit places. You can list all these combinations by writing a short program or building an excel file with some calculations in it.
2006-07-01 13:37:39 · answer #2 · answered by Oden the Dragon 1 · 0⤊ 0⤋
There are 10,000 possible combinations. Why? becasue that's the amount of numbers that you can have on the lock. The numbers 0001 to 9999 and the number 0000 for a grand total of 10,000.
2006-07-01 13:30:23 · answer #3 · answered by Chx 2 · 0⤊ 0⤋
The answer is 10,000. For the first number you have 10 choices, the second number, ten also, etc. Multiply the four tens together to get 10,000.
Katie, you forgot 0000 as a combination.
2006-07-01 14:11:02 · answer #4 · answered by quickster94 3 · 0⤊ 0⤋
36 / 4 digits * 9 possible numbers
2006-07-01 13:34:33 · answer #5 · answered by Grace Y 2 · 0⤊ 0⤋
Well, you need to know a couple of things first... are you allowed to repeat numbers, or can you use each number only once? If you can only use each number once, it is 210. If you can use each number any number of times, it is 5040.
You should be able to search for "Combinations and Permutations" on the web, and find a website that will list them for you.
2006-07-01 13:29:14 · answer #6 · answered by rinkeref 2 · 0⤊ 0⤋
10 x 10 x 10 x 10 = 10 000 combinations.
2006-07-01 16:03:16 · answer #7 · answered by Anonymous · 0⤊ 0⤋
The answer is 9*9*9*9 (go ahead, use YOUR calculator) if you are allowed to repeat numbers. Otherwise, 9*8*7*6 if you're not allowed to repeat numbers.
Yes, you can program your computer to calculate this, and print it out for you, so you don't have to write it all down.
2006-07-01 13:27:02 · answer #8 · answered by Anonymous · 0⤊ 0⤋
10,000 - if numbers are allowed to be repeated (for example: 1-1-1-1).
10 x 9 x 8 x7 - if numbers cannot be repeated
2006-07-01 13:30:45 · answer #9 · answered by Anonymous · 0⤊ 0⤋
The equation would nicely be 357 = one hundred fifty + 0.23x the position x is the shape of miles because there's a value of $one hundred fifty, plus 0.23 per mile. to unravel: Subtract one hundred fifty from each and every aspect of the equation to eliminate the only hundred fifty. 207 = 0.23x Divide each and every aspect by utilizing 0.23 to get x on my own 900 = x so that you'll commute 900 miles. desire this helps!
2016-10-14 01:11:52 · answer #10 · answered by Anonymous · 0⤊ 0⤋