1. | N articles are arranged in such a way that 2 particular articles never come together. The number of such arrangements is |
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2. | The number of arrangements of 10 different things taken 4 at a time in which one particular thing always occurs is |
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3. | The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is |
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4. | The number of different factors the number 75600 has is |
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5. | is equal to Options: A. B. C. D.None of these |
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6. | The number of 4 digit numbers greater than 5000 can be formed out of the digits 3, 4, 5, 6 and 7 (no. digit is repeated). The number of such is |
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7. | The number of arrangements of the letters in the word FAILURE, so that vowels are always! coming together is |
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8. | The number of numbers lying between 10 and 1000 can be formed with the digits 2,3,4,0,8,9 is |
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9. | At an election there are 5 candidates and 3 members are to be elected. A voter is entitled to vote for any number of candidates not greater than the number to be elected. The number of ways a voter choose to vote is |
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10. | The value of Options: A. B.-1 C.+1 D.None of these |
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11. | ^{n}P_{r} can also written as Options: A. B. C. D.None of these |
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12. | The number of ways in which 12 students can be equally divided into three groups is |
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13. | is evaluated as |
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14. | The number of ways the letters of the word COMPUTER can be rearranged is |
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15. | The number of different words that can be formed with 12 consonants and 5 vowels by taking 4 consonants and 3 vowels in each word is Options: A. B. C.4950(7)! D.None of these |
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16. | If . ^{n}P_{3}: ^{n}P_{2} =3:1, then n is equal to |
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17. | The number of ways in which 7 boys sit in a round -table so that two particular boys may sit together is |
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18. | The number of numbers lying between 100 and 1000 can be formed with the digits 1,2,3, 4, 5, 6, 7 is |
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19. | 5 letters are written and there are five letter-boxes. The number of ways the letters can be dropped into the boxes, are in each |
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20. | There are 12 points in a plane of which 5 are collinear. The number of triangles is |
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