Question
Question: No. of ways in which 38808 can be expressed as a product of two co-prime factors are...
No. of ways in which 38808 can be expressed as a product of two co-prime factors are
A
11
B
8
C
16
D
2
Answer
8
Explanation
Solution
38808 = 23 × 32 × 72 × 111
Number of co-prime factors = 2a–1
Where a is number of different Prime factor, here a = 4
So is = 24–1 = 8