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1
If nPr = 360 , find r.
5
4
3
6
2
Compute the factorial of 6
24
120
720
5040
What will be the total ways in which 4 letter words can be formed from the letters of word MAHESH in which all vowels are always together?
12
68
72
There are 8 toy cars and 5 dolls in a shop. In how many ways the shopkeeper will either sell a toy car or a doll?
13 ways.
7 ways.
20 ways.
91 ways .
A team of 5 boys is to be formed from 8 boys in which one boy is always included, what will be the total number of all possible arrangement?
4200
360
If P( n, 5) = 20. P(n-3) , find n.
8
16
15
7
If 10Pr = 5040 , find the value of r.
10
Compute factorial of 9
362880
40320
9
Compute the expression
42
44
26
There are 5 basket balls , 10 base balls and 2 cricket balls in a shop. In a how many ways players can buy three of them ?
100 ways.
17 ways.
10 ways.
13 ways .
11
In how many ways can 6 persons stand in a queue?
210
2730
32760
360360
13
All the three letters of the TAB are arranged to form different words without repeating any letter in an one word. The words so formed are, then arranged as in dictionary. What will be the position of the word TAB in that sequence ?
14
If there are 12 questions in ch-1,18 questions in ch-2 and 15 questions in ch-3. In how many ways teacher can select a question from any one of the 3 chapters?
45 ways.
65 ways.
216 ways.
180 ways.
How many four letter words , with or without meaning , can be formed out of the letters of the word , 'LOGARITHMS' , if repetition of letters is not allowed?
3628800
Which of the following statement is/are correct?
(a) In a class there are 4 boys and 3 girls. Teacher wants to select a boy or a girl . Teacher can make selection in 12 ways.
(b) In a shop there are 5 candies and 5 chocolates. A child wants to have a candy or a chocolate. A child can have a candy or a chocolate in 25 ways.
Both (a) and (b) are correct .
Only (a) is correct.
Only (b) is correct.
None of these.
17
Find the total number of ways of answering five objective type questions each question having four choices.
625 ways.
1024 ways.
256 ways.
3125 ways.
18
All the five letters of the word TABLE are arranged to form different words without repeating any letter in any word. The words so formed are, then arranged as in dictionary. What will be the position of the word TABEL in that sequence ?
96
97
91
301
19
Find the number of arrangements of the letters of the word INDEPENDENCE. In how many of these arrangements
(i) do the words start with P
(ii) do all the vowels always come together
1386 , 186
1680 , 13860
138600 , 16800
16800 , 138600
20
In a class of 10 students there are 3 girls. In how many ways can they be arranged in a row such that no two of the three girls are consecutive ?
336
1693440