GRE Exam Numerical Ability Permutation and Combination

In a class of 62 students 41 are taking Spanish, 22 are taking Russian. Of the students taking Spanish or Russian, 10 are taking both courses. How many students are not enrolled in either course?

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GRE Other Question

A cubical block of metal weighs 1000 gm. How much will another cube of the same metal weigh if its sides are 1.5 times as long ? In the following correctly worked addition sum, A,B,C and D represent different digits, and all the digits in the sum are different. What is the sum of A,B,C and D?

5A
BC
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D43