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GMAT Question Bank

Categories : Number Properties

If a and b are both positive integers, is b^(a+1) - b(a^b) odd?

(1) a + (a + 4) + (a - 8) + (a + 6) + (a - 10) is odd
(2) b^3 + 3b^2 + 5b + 7 is odd


The trick to solving this question is to remember that for positive integers:

(a) Even^(positive integer) = even
(b) Odd^(positive integer) = odd
(c) even x even = even x odd = even
(d) even – even = even
(e) odd – odd = even
(f) even – odd = odd

Using statement (1):...

Categories : Interest Problems

GMAT Simple Interest QuestionQ) After adding a simple interest of $ 270 an investment becomes $1395. If the principal was invested at 6% p.a. simple interest, for how long was the principal invested.

A) 3 Years
B) 4 Years
C) 5 Years
D) 6 Years
E) 7 Years

Solution: As a Simple Interest problem, this question would make use of the formula,

SI = Principal * Rate * Time

Amount = SI + Principal

Plugging in values, we get,
$1395 = $ 270 + Principal

Principal = $1395 - $270 => $1125...

Categories : Critical Reasoning

GMAT CR Strongly SupportSanskrit Scholars are a minority in the Syllabus review committee. Since the committee offers recommendations on syllabus changes, the below par representation of Sanskrit Scholars would lead to fewer years of mandatory Sanskrit classes in schools.

If the statements above are correct, they strongly support which of the following?

a) An increase in the number of years of mandatory Sanskrit classes in schools would lead to higher representation of Sanskrit Scholars in the Syllabus review committee.

b) An equal...

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