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What is the HCF of $2^{5} \times 3^{2} \times 7$ and $2^{3} \times 3^{4} \times 11$ ?

Competition practiceNumber System, HCF & LCM

A72
B24
C216
D8

Step-by-Step Solution

Take each common prime to its lower power:

2^{3} \times 3^{2} = 72

. 7 and 11 are not common.

Answer: A) 72

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