self Maths Puzzle

How many letters does the correct answer to this puzzle contain?

Read Solution (Total 3)

self Other Question

Candidates Alice and Bob in an election receive 11 votes and 10 votes, respectively. If the votes are counted in random order, what is the probability that Alice never trails? 21!=510909x21y1709440000

Without calculating 21!, what are the digits marked x and y? explain.