80
If the two-digit (not didgit) number must come first and the letter afterwards, then there are 2600 possible passwords. If the letter can come anywhere is the password, there are 7800.
9 times the number
10 because 10 is the first 2 digit number out of all numbers.
You will get the greatest product if you choose the greatest possible numbers in both cases, i.e., 9 x 99.
Every six-digit number is greater than any five-digit number.
10
891 is the largest.
If the two-digit (not didgit) number must come first and the letter afterwards, then there are 2600 possible passwords. If the letter can come anywhere is the password, there are 7800.
9 times the number
It could be anything from 0000 to 9999 (10,000 possible combinations).
Oh, what a lovely question! If we're looking for 2-digit numbers where the one's digit is greater than the ten's digit, we simply need to think about the possibilities. There are 36 such numbers, ranging from 12 to 98. Just imagine all the happy little numbers waiting to be discovered!
First digit can be 1,2,3,4,5,6,7,8,9 Second through Fourth digit can be 0,1,2,3,4,5,6,7,8,9 Total number of passwords = 9 x 10 x 10 x 10 = 9,000 If no digit can be repeated in a password, then the possibilities are 9 x 9 x 8 x 7 = 4,536
Assuming a 3-digit password can begin with a zero, the answer is 720.
10 because 10 is the first 2 digit number out of all numbers.
The default 4 digit password installed onto the PSP is 0000 (four zeros).
You will get the greatest product if you choose the greatest possible numbers in both cases, i.e., 9 x 99.
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