Quantitative Aptitude
PERMUTATIONS AND COMBINATIONS
1. How many
tree digit numbers can be formed with the digits 1, 2,3 and 5 if repletion of
digits is not allowed?
A. 64
B. 60
C. 24
D. 125
2. How many three-digit
number can be formed with the digits 0, 1, 2, 3 ,5 ,6 if repletion of digits is
allowed.
A. 120
B. 180
C. 100
D. 216
3. How many
three digits numbers can be formed with the digits 0, 1, 2, 3, 5, 6, if
repletion of digits is not allowed?
A. 120
B. 180
C. 100
D. 216
4. There are
25 persons in a room. Each of them shakes hand with other persons. How many
shakes took place?
A. 250
B. 300
C. 600
D. 625
5. How many three-digit
odd numbers can be formed with the digits 1, 2, 3, 5, and 6 if digits cannot be
repeated?
A. 100
B. 105
C. 120
D. 135
6. How many three
digit even numbers can be formed with the digits 0, 1, 2, 3, 4, 5 and 6, if
digits cannot be repeated?
A. 100
B. 105
C. 120
D. 135
7. Form 10
members in a club, 5 executive member are to be chosen. In how many ways they
can be chosen, if two particular members will always be included?
A. 64
B. 60
C. 24
D. 125
8. From 10
members in a club, 5 executive members are to be chosen. In many how ways they
can be chosen, if two particular members will always be excluded?
A. 64
B. 60
C. 24
D. 125
9. How many
words can be formed using all the letters of the word TOMORROW?
A. 1680
B. 3360
C. 7620
D. 5340
10. How many
words, beginning with vowels, can be formed using all the letters of the word
DAUGHTER?
A. 40320
B. 15120
C. 5040
D. 20160
11. How many
different letters arrangement can made from the letters of the word EQUATION so
that all the vowels occur together?
A. 2880
B. 720
C. 2016
D. 1440
12. How many
different letters arrangement can be made from the letters of the word ARRANGE
so that all the vowels occur together?
A. 120
B. 180
C. 24
D. 216
13. How many
three-digit numbers, multiple of 5, can be formed from the digits 0, 1, 3, 4,
5, 6 if digits cannot be repeated?
A. 30
B. 36
C. 48
D. 50
14. A team
of 11 cricketers is to be selected from 15 players in which 7 are bowlers and
rest are batsman. In how many ways, the team can be selected if team must have
5 bowlers and 6 batsmen?
A. 3003
B. 1176
C. 588
D. 1260
15. How many
words, each of 3 consonants and 2 vowels can be formed from the letters of the
word COMPUTER?
A. 1680
B. 2160
C. 7620
D. 5340
16. How many
words can be formed the letters of the word NATION so that vowels occupy the
even places?
A. 18
B. 36
C. 24
D. 30
17. 6!-5!-4!=?
A. 6x4x4!
B. 6x5x4!
C. 5x4x4!
D. 6x5x5!
18. Three
dice are rolled simultaneously. What is the number of possible outcomes such
that at least on show the number 2.
A. 36
B. 81
C. 91
D. 116
19. A man
hit a target once in 3 shots. If the fires 4 shots in succession. What is the
possibility that he will hit the target?
A. 4/3
B. 3/4
C. 1
D. 65/81
ANSWER KEY:
1-C
2-B
3-C
4-B
5-B
6-B
7-C
8-C
9-B
10-B
11-B
12-B
13-B
14-C
15-B
16-B
17-A
18-C
19-D
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