Which of these numbers always end with the digit 6.

How many numbers can be formed with the digits 1, 6, 7, 8, 6, 1 so that the odd digits always occupy the odd places.

If abc, cab, bca are three digit numbers formed by the digits a, b, and c then the sum of these numbers is always divisible by 37.

Prove that there is no natural number for which 4^n ends with the digit zero.

Total number of 6 digited numbers in which all the odd digits and only odd digits appear is

Can the number 6^n , n being a natural number, end with the digit 5? Give reason.

Can the number 6^n , n being a natural number, end with the digit 5? Give reason.

Can the number 6^n , n being a natural number, end with the digit 5? Give reason.

Can the number 6^n , n being a natural number, end with the digit 5? Give reason.

Can the number 6^(n),n being a natural number, end with the digit 5? Give reason.