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).
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.
How many two digit numbers are there in which the tens digit is greater than the oneβs digit ?
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.
9218 9425