What are the greatest common divisors of the following pairs of integers? You can enter the exponent by typing $"^"$ symbol, for example, type $2^3$ for $2^3.$

$($a$)2^3*3^3*5*11$ and $2^4*3*5^3*7^3$

Answer $=$

$($b$)2^3*3^3*5*11$ and $2*5^2*7*{11}^2$

Answer $=$

$($c$)2^4*3*5^3*7^3$ and $2*5^2*7*{11}^2$

Answer $=$

Hint: