Permutations and Combinations-Permutation as an Arrangement [JEE (Based on NTA Guidelines-IIT Engg.) Mains Mathematics]: Questions 1 - 6 of 23
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Question 1
Question MCQ▾
The total number of three digit numbers, the sum of whose digits is even, is equal to
Choices
Choice (4) | Response | |
---|---|---|
a. | 250 | |
b. | 450 | |
c. | 350 | |
d. | 325 |
Question 2
Question MCQ▾
There are two professors each of mathematical, physics and chemistry. The number of ways these b professors can be seated in a row so that professors of the same subject can be seated together is
Choices
Choice (4) | Response | |
---|---|---|
a. | 24 | |
b. | 36 | |
c. | 48 | |
d. | 120 |
Question 3
Question MCQ▾
Fine the number of ways in which can be arranged a row which reads the same backwards and forwards
Choices
Choice (4) | Response | |
---|---|---|
a. | 30 | |
b. | 25 | |
c. | 20 | |
d. | 10 |
Question 4
Question MCQ▾
Total number of four digit odd number that can be formed by using is
Choices
Choice (4) | Response | |
---|---|---|
a. | 216 | |
b. | 400 | |
c. | 375 | |
d. | 720 |
Question 5
Question MCQ▾
In a circus there are cages for accommodating animals out of these cages are so small that five out of ten animals cannot enter into them. In how many ways will it be possible to accommodate animals in these cages?
Choices
Choice (4) | Response | |
---|---|---|
a. | 66400 | |
b. | 86400 | |
c. | 96400 | |
d. | 46900 |
Question 6
Question MCQ▾
The total number of permutations of different things taken not more than at a time, when each thing may be repeated any number of times is________
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |