Question : How many positive factors of 40 are there?
Option 1: 3
Option 2: 12
Option 3: 6
Option 4: 8
Answer (1)
26th Jan, 2024
Correct Answer: 8
Solution :
40 = 2
3
× 5
If N = a
m
× b
n
, where a and b are prime numbers, the number of positive factors of N = (m+1) × (n+1)
The number of positive factors of 40 = (3+1) × (1+1) = 8
Hence, the correct answer is 8.
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