- ARITHMETIC
- ALGEBRA
- GEOMETRY
- DATA ANALYSIS

Mathematical comparisons 14*

Problem Solving 10*

Chart 4*

Be Cool! Its very important for quantitative section. Prepare well on Mode ,Median, Probability, Permutations, Combinations. You may be getting around 4 questions on above topics.

- 0 is not prime number.
- 1 is not prime number.
- 2 is prime number.
- If |a| < 2, then -2 < a < 2; if |a| > 2, then a > 2 or x < -2.
- Total degrees in a polygon=180(n-2), n is number of sides.
- probability =(Result you are looking)/(Total results).
- n!(n factorial)=n*(n-1)*(n-2)*...1
- Permutations is arrangement of things in definite order. While in Combination order doesn't matter.
**Median**is the middle value in a set of numbers above and below it.

Example 1 :Consider G={2,4,7,8,9,12,14}

In this case 8 is median because there lies three other numbers before and after 8.

Example 2 :Consider G={2,4,7,8,9,12}

In this case median will be average of 7 and 8 i.e. 7.5**Mode**is the number or range of numbers in a set that occurs the most frequently.

Example Consider G={1,2,4,8,17,2,4,5,6,7,8,2}

In the above set 2 occurs thrice so this is mode.**Range**is defined as difference between maximum and minimum numbers in a set.

For above set Range is 17-1 i.e. 16.**Standard Deviation**of a set is measure of the set's variation from its mean.

Example Consider two sets G1={3,4,3,4} and G2={10,15,14,16}

Then It can be seen G1 has lower S.D. as compared to G2.

CD Provided by ETS has questions on Mode, median...Practice well!

Good Luck!### Begin GRE Quantitative Reasoning Test ------->>>>

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