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1
What will be the total ways in which 4 letter words can be formed from the letters of word Delhi in which all vowels are always together ?
6
24
96
4
2
If there are 10 fountain pens and 12 ball point pens .In how many ways a person can buy a fountain pen and a ball pen ?
120 ways.
10 ways.
24 ways.
2 ways.
3
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
If P( n, 5) = 20. P(n-3) , find n.
8
16
15
5
If 10Pr = 5040 , find the value of r.
10
In a school there are 15 candidates for Science scholarship and 20 candidates for English scholarship. In how many ways either of these scholarships will be awarded?
35 ways.
25 ways.
300 ways.
150 ways.
7
In a box there are 10 red balls and 5 white balls. The shopkeeper wants to withdraw either a red ball or a white ball to display in showcase. In how many ways the shopkeeper can make this selection ?
15 ways.
5 ways.
50 ways.
None of these.
There are 5 Mathematics books and 6 Physics books in a book shop. In how many ways a student can buy a mathematics book or a physics book?
6 ways.
11 ways.
9
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 ?
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.
13 ways .
11
How many committee of five persons with a chairperson can be selected form 12 persons?
3965
3960
3300
3360
Among the 36 teachers in a school , one principal and one vice principal is to be appointed . In how many ways can this be done ?
5040
1260
720
40320
13
In a book store there are 5 story books, 6 magazines and 2 English books . In how many ways the shopkeeper can give one of the three books to a child?
13 ways.
8 ways.
14
Compute the expression
210
2730
32760
360360
There are four parcels and five post offices. In how many ways can the parcels be sent by registered post?
1024 ways.
625 ways.
20 ways.
Which of the following statements are true:
1. In a class there are 10 boys and 8 girls. The teacher wants to select either a boy or a girl to represent the class in a function the teacher can perform this selection in 16 ways.
2. In a library there are 10 English and 5 Hindi books. The student has to select either a Hindi or English book, The student can perform this selection in 15 ways.
Only statement 1 is correct
Only statement 2 is correct
Both the statements are correct
Both the statements are incorrect
17
Which of the following statement is/are correct?
(a) In a box there are 14 black balls, 10 yellow balls and 5 white balls. The number of outcome for selecting one of these balls is 29
(b) In library there are 12 Moral Science books, 5 General Science books. The number of ways in which a student can pick one of these books in 17 ways.
Both (a) and (b) are correct.
Only (a) is correct.
Only (b) is correct.
18
How many words, with or without meaning, can be formed using all the letters of the word 'EQUATION', using each letter exactly once.
120
19
Which of the following statement is /are correct?
(a) There are 20 dancers and 8 non dancers . In 160 ways the choreographer can choose a dancer and a non dancer .
(b) In a bakery there are 5 cakes ,7 pastries and 4 swiss rolls . In 16 ways a customer can buy a cake , pastry and a swiss role .
20
Compute the following expression
489
640
306
204