Question

Which one of the following cannot be the square of a natural number?

A) 32761 B) 42437 C) 81225 D) 20164

Answer 1

Answer:

a)

Step-by-step explanation:

the the square of natural number never in end 7

42437 is not a square of natural number

Answer 2

Answer:

B) 42437

Step-by-step explanation:

The square of a natural number always ends with 0, 1, 4, 5, 6, 9. So, The natural number in option B) can not be the square of a natural number.

A) 32761 = $181^{2}$

C) 81225 = $285^{2}$

D) 20164 = $142^{2}$

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