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Q1: 2+2+2^2+2^3+2^4+...+2^8 = ? Q2: B is an odd integer. The

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Senior Manager
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Q1: 2+2+2^2+2^3+2^4+...+2^8 = ? Q2: B is an odd integer. The [#permalink]  09 Mar 2007, 05:38
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?
(A) 20
(B) 30
(C) 40
(D) 70
(E) 100

I am sorry I do not have the answers.
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q1: 2^9
q2: 120+(b-1)/2
q3: C
q4: D
Senior Manager
Joined: 20 Feb 2007
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Sorry, I do not have the answers.

But this particular range question no. 4 looks incomplete to me.

As for the first question, I thought of the fibonacci series f(n) = f(n-1) + f(n-2) but it does not work here.
Senior Manager
Joined: 20 Feb 2007
Posts: 257
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Kudos [?]: 14 [0], given: 0

Thanks Hobbit!

I will try to solve the questions once again since I have the answers you gave here.

Could you please explain how you solved Q4?
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