10^23-7 is divided by 6, remainder is?  Choose the correct choice from the following answers.
A) 3  B) 4  C) 5  D) 6  E) 7

Rationale: anything power by 10 we got 10 and some zeros after that . ( i . e , 1000000000000000 . . . . ) on that , we minus 7 means , we must get last two digits is 93 . and 93 is divided by 6 , we get reminder 3 . answer : a
Answer: A