L.C.M and H.C.F. of two numbers are $96$ and $4$, respectively. If one of the numbers is $32$, find the other number.

H.C.F. of  $23\times 3\times 52\times 7$ and $2\times 33\times 11$ _____.

Which of the following will come in place of both the question marks $(?)$ in the following equation: 

$\frac{128÷16\times ?-7\times 2}{7^2-8\times 6+{?}^2}=1$.