self Maths Puzzle

Find the highest power of 12 that divide 49!.

Read Solution (Total 2)

self Other Question

A three digit non-zero number 'abc' in base 5, when converted to base 7, becomes 'cba'. Which of the following is necessarily true?
option
1. a must be 2
2. c must be 2
3. b must be 0
4. None of these
What isĪ£ ( ), where is the number of ways of choosing k items from 28 items?