GREKing: Permutation and Combination

Target 320+ in GRE

1

GREKing

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Permutation and Combination

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• nPr=nPr+1 & nCr=nCr-1, then find the value of n,r.

1. 4,3

2. 3,2

3. 4,2

4. None of these

• In how many ways can 5 boys and 5 girls form a circle such that the boys and girls are alternate?

1. 2880

2. 2885

3. 1660

4. 4220

• In how many ways can we arrange the 5 vowels if;

two of the vowels e, I are always together.

Two vowels e, I are never together.

1. 48,72

2. 60,82

3. 40,63

4. 28,82

• Three dices are rolled. The number of possible outcomes in at least one dise shows 5 is:

1. 91

2. 122

3. 123

4. 54

• The number of ways in which n distinct objects can be put into 2 different boxes is:

1. n2

2. 2n

3. 2n

• The number of selections of one or more questions from 10 questions, each question having an alternative is:

1. 310

2. 310 -1

3. 210

4. 210 - 1

• A 5 digit number divisible by 3 is to be formed using numerals 0,1,2,3,4,5 without repetition. The total number of ways is:

1. 216

2. 600

3. 240

4. 3125

• If all the permutation of Letters of word AGAIN are arranged in dictionary, then the 50th word is:

1. NAAGI

2. NAAIG

3. NAGAI

4. NAIAG

• The number of ways in which 13 coins can be distributed to 3 persons such that each of them gets at least 2 coins:

1. 24

2. 42

3. 6

4. 36

• The number of ways in which letters of word MATHEMATICS can be arranged is given by:

1. 136

2. 192

3. 1680

4. 2454

• The number of numbers that can be formed using digits 2,3,0,3,4,2 which is more than one million:

1. 360

2. 340

3. 370

4. none of these.

• The number of ways in which 6 men and 5 men can dine at a round table if no two women are to sit together is:

1. a.30

2. 7!*5!

3. 6!*5!

4. 5!*4!.

• If two dices are thrown simultaneously, the number of elements is sample space:

1. 36

2. 24

3. 40

4. 100

• In how ways can six diff. rings be worn on four fingers of a hand?

1. 10

2. 12

3. 15

4. 16.

• In how many ways can 12 girls be arranged in a row if two particular girls must occupy the end place?

1. 10!/2!

2. 12!

3. 10!*2!

4. 12!/2!

• In how many can a selections of 5 letters be made out 5A’s,4B’s,3C’s,2D’s & 1 E’s?

1. 70

2. 71

3. 15C5

4. 15P5.

• How many diff. words can be formed with the letters of the word MISSISSIPI.

1. 34650

2. 32456

3. 7200

4. 92100.

• How many ways can 5 prizes be given away to 4 boys, when each boy is eligible for all prizes?

1. 45

2. 54

3. 7200

4. 9000.

• How many numbers of 3 digits can be formed with the digits of 1,2,3,4,5 when digits many be repeated.

1. 125

2. 127

3. 555

4. All of these

• The number of square that can be formed on a chessboard is

1. 204

2. 160

3. 64

4. 240

• There are 10 lamps in a hall. Each of them can be switched independently. The number of ways in which the hall can be illuminated?

1. 1024

2. 1023

3. 8!

4. 9!

• In how many ways a hockey team of 11 can be elected from 16 players

1. 4368

2. 9000

3. 3687

4. 6258

ASHITA MEPANIBOSTON UNIVERSITY

MOHIT DESAISYRACRUSE UNIVERSITY

FATEMA AURANGABADINORTHEASTERN UNIVERSITY

BHAVISHA DAWDANEW YORK UNIVERSITY

MAITRI BUCHUNIVERSITY OF TEXAS DALLAS

RAVI HARIANITUSCON, ARIZONA

SANKET WALAWALKARKELLY SCHOOL OF BUSINESS

AMEY BHAVSARNEW YORK UNIVERSITY

KUSHAL THAKKARCARNEGIE MELLON UNIVERSITY

ANUP DESHPANDENEW JERSEY, NOMURA

ROHIT ZAWARINDIANNA UNIVERSITY

SAGAR SUCHAKUNIVERSITY OF TEXAS DALLAS

DARSHI SHAHNEW YORK UNIVERSITY

AAMIR LAKDAWALAKAISERSLAUTERN UNIVERSITY, GERMANY

320 + scoring students from GRE King

ARCHANA RAMAKRISHNANUNIVERSITY OF CALIFORNIA

Target 320+ in GRE

THANK YOU!

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