The least number, that must be added to 1720 so as to obtain a perfect cube, is
1). 7
2). 8
3). 11
4). 13
3. $\sqrt{\frac{0.49}{0.25}}+\sqrt{\frac{0.81}{0.36}}$ is equal to
4. What will come in place of question mark '?' in the following question? √9216 + √2916 - √2500 = ?
5. The product of two whole numbers Is 37. The square root of the difference of the numbers is
6. The fourth root of 24010000 is
7. What will come in place of the question mark '?' in the following question? √571536 ÷ 42 × ? = 5850