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Cardinality

Question 28 T...

Question

Question 28
The number of distinct prime factors of the smallest 5-digit number is

(A) 2
(B) 4
(C) 6
(D) 8

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Solution

We know that, smallest 5-digit number=10000
Prime factors of 10000

i.e. $10000 = 2^{4} \times 5^{4}$
Hence, the number of distinct prime factors of the smallest 5-digit number is 2.

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