Question

Joydip calls a power of 2
"One-derful" if it starts
with 1, "Two-derful" is it
starts with a 2 and so on.
He noticed that 2^1698 is
a "One-derful" number
with 512 digits. For how
many positive integers n
(where n< 1698) with 240
be "Four-derful"? ​

Answer 1

Answer:

Step-by-step explanation: