exam Maths Puzzle Numerical Ability

i need help solving this problem....

[(3c^-7d^9)^-7]^6

Read Solution (Total 0)

exam Other Question

a rectangle has a length twice its width. A square with the same area has a side 2 units longer than the width of the rectangle. Find the dimensions of the rectangle. Which of the following is equivalent to 7 to the 77th power minus 7 to the 76th power? 7 ^ 77 - 7 ^76
a. 7
b. 7 ^ 77-76
c. 7 ^ 77/76
d. 7(77-76)
e. 7^76(6)

I believe that e