1-2 What is the least integer greater than 1 million whose square root is also an integer?

My answer was 1002001.

1-3 What are both integers n for which

(2^n^4)(2^n^3)(2^n^2)(2^n)=1 My answer was 0 and -1.

1-4 The cost(in cents) of 8 candies is equal to the number of candies that I can buy for 98 cents. At the same cost per candy, how many cents do 14 candies cost?

My answer was 49 cents.