other Exam Numerical Ability

next term of sequence
1,11,21,1211,111221,312211,13112221,1113213211,

Read Solution (Total 2)

other Other Question

5^2n-6n+8 is always divisible by
a)9
b)8
c)5
d)6
how many positive integers n are there such that 6^n-1 is a prime number