How to divide odd numbers

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GRE Quantitative Reasoning › How to divide odd numbers

Questions 1 - 6

1

What are three consecutive odd integers whose sum equals ?

Explanation

Set up the equation,

.

Simplify to and solve for x to find .

Therefore the 3 consecutive odd integrers are .

2

Solve for :

Explanation

To solve, divide both sides of the equation by :

As a check, if you divide an odd number by another odd number, your result should be odd.

3

Solve for :

Explanation

To solve, isolate your variable by dividing both sides of the equation by :

4

Solve for :

Explanation

To solve, first isolate your variable by dividing both sides of the equation by :

As a check, if you divide an odd number by another odd number, your result should be odd.

5

Assume and are both odd whole numbers and .

What is a possible solution for $\frac{a}{b}$ ?

$\frac{13}{3}$

$\frac{3}{13}$

$\frac{1}{2}$

Explanation

The two requirements for this problem are that both and must be odd, and that . The only answer that fits both of these is $\frac{13}{3}$ . The other answers show either or is an even number.

6

Solve for :

Explanation

To solve, divide both sides of the equation by :

As a check, if you divide an odd number by another odd number, your result should be odd.

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