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Solution



To find
We need to determine
    • The number of positive factors of 216, including 1 and 216

Approach and Working out
Expressing 216 in terms of its prime factors, we get:
    • \(216 = 8 * 27 = 2^3 * 3^3\)
    • Hence, total number of factors of 216 = (3 + 1) x (3 + 1) = 4 x 4 = 16

Thus, option C is the correct answer.

Correct Answer: Option C
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What if we have to find odd factors?

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gurmukh
What if we have to find odd factors?

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If we need just the number of odd factors, the prime factor 2 can take only one power which is 0 and the prime factor 3 can take 4 powers which are 0,1,2 and 3

So total number of odd factors = 1*4 = 4

Total number of even factors = 16-4 = 12

Hope this helps
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