Question

confusing :/ help ? ( attachment below)

Answer 1

the total no. of combinations are = 12*12*4 = 576

Answer 2

it was wrong ...

Answer 3

13*4*13 maybe?

Answer 4

:( ?

Answer 5

sorry, do you have your math book? that may help

Answer 6

no is online, but why do you think 13*4*13? explain >?

Answer 7

there are 13 possible numbers than can be in the first digit. There are 4 possible numbers for the second, and again 13 for the third digit. I looked this idea online, and it also states you would just multiply the number of possible numbers.