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The number of many one functions from A=...

The number of many one functions from `A= {1, 2, 3}` to `B= {a, b, c, d}` is

A

64

B

24

C

40

D

0

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-PERMUTATIONS & COMBINATIONS-EXERCISE-I
  1. The number of onto functions that canbe defined from A = {a, b, c, d, ...

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  2. The number of into functions that can be defined from A={x, y, z, w, t...

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  3. The number of many one functions from A= {1, 2, 3} to B= {a, b, c, d} ...

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  4. The number of constant mappings from A={1, 2, 3, 4...., n} to B= {a, b...

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  5. The number of different arrangements that can be made out of "MISSISSI...

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  6. The number of ways in which 17 billiard balls be arranged in a row if ...

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  7. Number of words that can be formed with letters of the word CORRESPOND...

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  8. The number of ways to rearrange the letters of the word CHEESE i...

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  9. The number of ways can 8 students sit round the table are

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  10. The number of ways that 8 beads of different colours be strung as a ne...

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  11. The number of ways can 11 persons sit around a table so that all shall...

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  12. The number of ways in which 5 different coloured flowers be strung in ...

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  13. The number of circular permutations of 8 things taken 4 at a time in b...

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  14. Number of necklaces of 8 beads each can be made from 15 beads of vario...

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  15. The sum of all the numbers formed by taking all the digits from 2, 3, ...

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  16. The sum of all the numbers formed by taking all the digits from 2, 3, ...

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  17. There are 3 letters and 3 addressed envelopes coorresponding ...

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  18. The number of ways in which four letters can be put in four addressed ...

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  19. The positive integer r, such that ""^(15)C(3r)=""^(15)C(r+3) is equal ...

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  20. n and r integers such that 1lerlen, then n. ""^(n-1)C(r-1) is

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