What is the least number that can be added to 4800 to make it a perfect square? (a) 110 (b) 81 (c) 25 (d) 36 (e) None of these

To find the least number that can be added to 4800 to make it a perfect square, we observe that:

• \(4800\) is close to \(4900\), which is a perfect square.
• The square root of \(4900\) is \(70\), indicating \(4900\) is the nearest perfect square above \(4800\).

The calculation to find the required least number is:

\[
4900 – 4800 = 100
\]

Thus, the least number that needs to be added to 4800 to make it a perfect square is 100.

Since none of the provided options (a) through (d) match \(100\), the correct answer is indeed (e) None of these.