1 The value of $\frac{1}{(216)^{-\frac{2}{3}}}$ $ +\frac{1}{(256)^{-\frac{3}{4}}}$ $+\frac{1}{(32)^{-\frac{1}{5}}}$ is : A) 102 B) 105 C) 107 D) 109
7 If $5\sqrt{5}\times 5^{3}+5^{-\frac{3}{2}}$ $=5^{a+2}$, then the value of a is: A) 4 B) 5 C) 6 D) 8
9 If $\frac{9^{n} \times 3^{5} \times \left(27\right)^{3}}{3 \times \left(81\right)^{4}}=27$, then the value of n is: A) 0 B) 2 C) 3 D) 4
12 Number of prime numbers in $\frac{6^{12}\times 35^{28}\times 15^{16}}{14^{12}\times 21^{11}}is:$ A) 56 B) 66 C) 112 D) none of this
14 If $2^{x}=3^{y}=6^{-z}$, then $\left( \frac{1}{x}+\frac{1}{y}+\frac{1}{z}\right)$ is equal to? A) 0 B) 1 C) 3/2 D) -1/2