JAMB - Mathematics (1986 - No. 4)
Find the smallest number by which 252 can be multiplied to obtain a perfect square
2
3
5
7
Paliwanag
\(252 = 2^{2} \times 3^{2} \times 7\)
\(\therefore\) To make 252 a perfect square, the smalest number to multiply with = 7.
\(252 \times 7 = 1764 = 42^{2}\)