Question
Find the square of 39.
Answer: Option C
:
C
The number 39 ends with 9.And92=81which ends with 1.Hence,392should have 1 in the unitsplace.
We can observefrom options thatonly 1521 satisfies this.Hence 1521 is the answer.
Alternatively, 39 should be multipliedwith 39 to obtain the square.
So,39×39=1521.
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:
C
The number 39 ends with 9.And92=81which ends with 1.Hence,392should have 1 in the unitsplace.
We can observefrom options thatonly 1521 satisfies this.Hence 1521 is the answer.
Alternatively, 39 should be multipliedwith 39 to obtain the square.
So,39×39=1521.
Was this answer helpful ?
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