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Question : Calculate the total number of prime factors in the expression $(4)^{11}×(5)^{5}×(3)^{2}×(13)^{2}$.

Option 1: 30

Option 2: 31

Option 3: 33

Option 4: 32


Team Careers360 7th Jan, 2024
Answer (1)
Team Careers360 22nd Jan, 2024

Correct Answer: 31


Solution : Given: $(4)^{11}×(5)^{5}×(3)^{2}×(13)^{2}$
= $(2^{2})^{11}×(5)^{5}×(3)^{2}×(13)^{2}$
= $(2)^{22}×(5)^{5}×(3)^{2}×(13)^{2}$
If $N = a^m × b^n$, where a and b are prime numbers, then the total number of prime factors $N = m + n$
$\therefore$ Total prime factors = 22 + 5 + 2 + 2 = 31
Hence, the correct answer is 31.

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