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Find the number of divisors of 1420

This question belongs to Arithmetic Ability Number System
Number System
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Find the number of divisors of 1420.

Answer & Solution
Correct Answer: Option D
1420 = 2 × 2 × 5 × 71 = (20 + 21 + 22) × (50 + 51) × (710 + 711)
Here, we count the number of terms in the expansion.
In the above expansion,
1420 contains number of terms = 3 × 2 × 2 = 12
Then, the number of factors or divisors = 12
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1 Comment
Rajesh Tedlapu
Rajesh Tedlapu 1 year ago
1420 is not divisible by 12 please change the answer
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