What is the next number in the sequence 1 4 16 64?

Answer 1

The sequence is a geometric progression.

Here, first term(a) = 1 and common multiple(r) = 4.

nth term of G.P. is given by an = arn-1

If we put n = 5, then a5 = 1x44 = 256.

So next term in the sequence is 256.