Find the smallest number which should be added to 4750 to make it a perfect square.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 11
The number to be added is the gap between 4750 and the next perfect square above it, so the square roots on either side of 4750 are found first.
\(68^2=4624\), which is less than 4750
\(69^2=4761\), the next perfect square, which is more than 4750
Number to be added \(=4761-4750=11\)