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The product of two prime numbers is 437. What is the smaller of the two numbers?
Question

The product of two prime numbers is 437. What is the smaller of the two numbers?

A.

23

B.

13

C.

17

D.

19

Correct option is D

Given:
The product of two prime numbers is 437.
Solution:
Let the two prime numbers be a and b.
a × b = 437
Check prime numbers starting from 2 up to the square root of 437.
437 is not divisible by 2, 3, 5, 7, 11, 13, or 17.
Check divisibility by 19.
43719\frac{437}{19}​ = 23
Both 19 and 23 are prime numbers.
The two numbers are 19 and 23.
The smaller prime number is 19.
Final Answer
So the correct answer is (d)

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