7^6/7^2
(7*7*7*7*7*7)/(7*7)
the answer is b. 7^4
I think it's higher because as far as the integer gets, the higher its absolute value gets. So, put higher in the blank.
For each choice of the first two digits you have 10<span> choices for the third digit. Thus you have 10x10x10 = 1000 choices for the first three digits. Finally you have </span>10<span>choices for the fourth digit and thus there are 10x10x10x10 = </span>10 000<span> possible 4 digit combinations from </span>0-9<span>.</span>
