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The pdf file above contains all of the questions published in the GMATQuantum blog. Please download the file and then open it in Adobe Acrobat Reader for all of its features to work properly.

Monday
Nov272017

## GMAT Problem Solving 90: Handshakes and counting

Try this GMAT problem solving question which requires you to count the number of handshakes in a gathering with constraints.

At one of George Washington's parties, each man shook hands with everyone except his spouse, and no handshakes took place between women. If $$13$$ married couples attended, how many handshakes were there among these $$26$$ people?
1. $$\quad 78$$

2. $$\quad 185$$

3. $$\quad 234$$

4. $$\quad 312$$

5. $$\quad 325$$

Friday
Nov032017

## GMAT Problem Solving 89: Square roots and fractional exponents

Try this GMAT problem solving question which requires you to convert square root terms to exponent forms in algebraic expressions.

Which of the following is equivalent to $$x \sqrt{x}$$ ?
1. $$\sqrt[3]{\sqrt{x^9}}$$
2. $$\sqrt{\sqrt[4]{x^{12}}}$$
3. $$\sqrt{\sqrt[3]{x}}$$
1. I only

2. I and II only

3. I and III only

4. II and III only

5. I, II, and III

Sunday
Oct222017

## GMAT Problem Solving 88: Sequence product with pattern

Try this GMAT problem solving question which requires figuring out a pattern in the terms involved in a tedious looking product.

The product $$\left(1-\dfrac{1}{2^{2}}\right)\left(1-\dfrac{1}{3^{2}}\right)\ldots\left(1-\dfrac{1}{9^{2}}\right)\left(1-\dfrac{1}{10^{2}}\right)$$ equals
1. $$\quad \dfrac{5}{12}$$

2. $$\quad \dfrac{1}{2}$$

3. $$\quad \dfrac{11}{20}$$

4. $$\quad \dfrac{2}{3}$$

5. $$\quad \dfrac{7}{10}$$

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