Q1: 2+2+2^2+2^3+2^4+...+2^8 = ?
Q2: B is an odd integer. The median of B consecutive integers is 120. What is the maximum value?
Q3: If r and s are positive prime numbers, n = r^a * s^b, a and b are positive integers, is sqrt(n) an integer?
(1) a+b is an even number
(2) ab is an even number
Q4: The range of a set S is 30 and the range of set T is 70. The set V is combined with set S and set T. What is the possible least range of set V?
I am sorry I do not have the answers.