The square root of a positive number less than 100 lies between

If the square root of 841 is 29, then square root of 0.00000841 is equal to:

If the average of 11, 23 and x is 40, then what is the value of x?

If m + n = 1, then what will be the value of m³ + n³ + 3mn?

If a + b + c = 2, a² + b² + c² = 26 then the value of a³ + b³ + c³ – 3abc is

The simplified value of
$${{1\over 3}÷{1\over 3}×{1\over 3}\over{1\over 3}÷{1\over 3}of{1\over 3}}-{1\over 9}$$

Find the value of x:
2³ × 3⁴ × 1080 ÷ 15 = 6^x

Find the conjugate of (1 + i) ³