Question

Find the index of greatest power of 2 in 64! + 65! + ... + 120!

Answer 1

here answered is 120

Answer 2

Answer:

64

Step-by-step explanation:

1)first take 64! common out of the equation

2)then [1+65+66.65+67.66.65+...........]

3)add (65+1) and take 66 out common

4) 2's IGP in 64!=63 and 66=1

5)answer=63+1=64