List of top Quantitative Aptitude Questions on Number Systems asked in NMAT by GMAC

A question is followed by two statements, numbered (1) and (2). Using the information provided and general knowledge, decide whether the information given is sufficient to solve the problem.
Is \(x^2-y^2\) even?
(1) \(x+y\) is even.
(2) \(x-y\) is odd.

How many 4-digit numbers of the form AB61 are there that are divisible by 11 (where A and B are distinct digits)?

The integers \(1, 2 ... 40\) are written on the blackboard. The following operation is then repeated 39 times. In each repetition, any two numbers, say a and b, currently on the blackboard are erased and a new number \(a+b-1\) is written. What will be the number left on the board at the end?

The arrangement of rational numbers \(\frac{-7}{10},\frac{5}{-8},\frac{2}{-3}\) in ascending order is

when simplified, the product
\(\left\{2-\frac{1}{3}\right\}\)\(\left\{2-\frac{3}{5}\right\}\)\(\left\{2-\frac{5}{7}\right\}\)---\(\left\{2-\frac{999}{1001}\right\}\) is equal to

Which number should replace both the question marks in the following equation? \(\frac{?}{492}\)=\(\frac{123}{?}\)

What should come in place of question mark\((?)\)in the following questions?
\(6132+5619-4725-?=3134+1710\)

What should come in place of question mark (?) in the following questions?
\((9.75\% \text{ of } 316) - (3.82\% \text{ of } 120) = ?\)

What should come in place of question mark\((?)\)in the following questions?
\(65\%\text{ of } 284 + ? = 300\)

What should come in place of question mark\((?)\)in the following questions?
\(\frac{5339}{?} = 562\)

What should come in place of question mark\((?)\)in the following questions?
\((32)^2+\sqrt{?}-(23)^2=536\)

What should come in place of question mark\((?)\)in the following questions?
\((56.23+93.96+17.81\div6=?\)

What should come in place of question mark (?) in the following questions?
(34)⁴⁸ X (34)^-44=?

What should come in place of question mark \((?)\) in the following questions?
\(\frac{(203 - 152) }{ (0.75 \times 4)}=?\)

What should come in place of question mark (?) in the following questions?
\(16.513 - 4.328 - 2.014 - 0.577 = ?\)

What should come in place of question mark\((?)\)in the following questions?
\(\frac{?}{48}\times15=405\)

What should come in place of question mark\((?)\)in the following questions?
\((7.3\% \text{ of } 436) - (4.8\%\text{ of } 356) = ?\)

What should come in place of question mark \((?)\)in the following questions?
\(\frac{1534}{26}\times8+12=(?)^2\)

What should come in place of question mark (?) in the following questions?
\(215\times ? \times 12 = 136585 + 7895\)

What should come in place of question mark\((?)\)in the following questions?
\(33.3 + 3.03 + 0.03 + 30.03 + 0.003 + 303 = ?\)