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Frequently Asked GRE Numerical Ability - Permutation and Combination Sample Question with Solutions

(#M40000307) GRE QUESTION Keep an EYE

In a box of 10 electrical parts, 2 are defective.
(a) If one part is chosen randomly from the box, what is the probability that
it is not defective?
(b) If two parts are randomly chosen from the box, without replacement,
what is the probability that both are defective?

Asked In GRE neeraj (15 years ago)

Solved Tijo Jose Read Solution (2)

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(#M40165678) GRE QUESTION Keep an EYE

There are 10 multiple choice questions in an examination. First 4 have 5 choices each and remaining have 4 choices each. How many sequences of answers are possible?
a)4^5 * 5^4 b)4^5 * 6^4 c)5^4 * 6^4 d)5^4 * 4^6

Asked In GRE Devendra Marghade (6 years ago)

Unsolved

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(#M40165909) GRE QUESTION Keep an EYE

In how many different ways can the letters of the word SINISTER be arranged such that two S are never together? A)2520 B)7560 C)8280 D)10080

Asked In GRE Devendra Marghade (6 years ago)

Unsolved

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(#M40000304) GRE QUESTION Keep an EYE

A talent contest has 8 contestants. Judges must award prizes for first, second,
and third places. If there are no ties, (a) in how many different ways can the
3 prizes be awarded, and (b) how many different groups of 3 people can get
prizes?

Asked In GRE neeraj (15 years ago)

Solved Bimal Read Solution (3)

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(#M40166020) GRE QUESTION Keep an EYE

English language has 26 alphabets, out of 4 distinct vowels and 6 distinct consonants, how many letter patterns can be made with each is to contain 4 distinct consonants and 2 distinct vowels ?

Asked In GRE Devendra Marghade (6 years ago)

Unsolved Read Solution (1)

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(#M40165996) GRE QUESTION Keep an EYE

What is the difference between the number of 4 member committees that can be formed from a group of 8 members and the total number of ways there are to arrange the members of such a committee ? (A)1720 (B)1610 (C)1390 (D) 1680

Asked In GRE Devendra Marghade (6 years ago)

Unsolved Read Solution (1)

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(#M40166000) GRE QUESTION Keep an EYE

Given an alphabet of 26 letters, with 21 consonants and 5 vowels. How many three letter words can be formed with a consonant as the first letter and a vowel as the last letter ? (A) 3180 (B) 2730 (C) 2190 (D) 2190

Asked In GRE Devendra Marghade (6 years ago)

Unsolved Read Solution (1)

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(#M40165964) GRE QUESTION Keep an EYE

180 students go to a school book exhibition. 110 buy English books, 90 buy Hindi books and at least 30 buy both. What is the least number of students who could have bought neither English nor Hindi books ?

Asked In GRE Devendra Marghade (6 years ago)

Unsolved Read Solution (1)

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(#M40165977) GRE QUESTION Keep an EYE

A survey was sent to 80 customers, 7 of whom responded. Then the survey was redesigned and sent to another 63 customers, 9 of whom responded. By approximately what percent did the response rate increase from the original survey to the redesigned survey? (A) 2% (B) 5% (C) 14% (D) 28% (E) 63%

Asked In GRE Devendra Marghade (6 years ago)

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(#M40165924) GRE QUESTION Keep an EYE

Given an alphabet of 26 letters with 21 consonants and 5 vowels, how many three-letter words can be formed with a vowel as the first letter and a consonant as the last letter ? A) 1560 B) 2730 C) 2205 D) 3380

Asked In GRE Devendra Marghade (6 years ago)

Unsolved

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