What should come in place of the question mark (?) in the following mathematical statement?
$${{?^6÷16=108}}$$

The value of $$5-{8+2\sqrt{15} \over4}-{{1}\over8+2\sqrt{15}}$$ is equal to:

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

Direction: What approximate value will come in place of the question mark (?) in the following question? (You are not expected to calculate the exact value)

(1110.02 + 89.81) ÷ ? – $${\sqrt{15}}$$= 15.98

The value of $${0.7×0.7×0.7+0.3×0.3×0.3}\over {0.7×0.7-0.7×0.3+0.3×0.3}$$ is

if $${x\over 9}+{8\over x}=1$$, then the value of x³ is :

If p = 99, then value of p(p² + 3p + 3) is

Direction: What approximate value will come in place of the question mark (?) in the following question? (You are not expected to calculate the exact value)

? ÷ 2.997 + 799.98 × 8.9 = 9199.978