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How many 4-digit numbers can be formed b...

How many 4-digit numbers can be formed by using the digits 1 to 9 if repetition of digits is not allowed?

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MODERN PUBLICATION-PERMUTATIONS AND COMBINATIONS -EXERCISE 7 (d) Short Answer Type Questions
  1. How many 3-digit even numbers can be formed from the digits 1,2,3,4,5,...

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  2. In how many ways can five children stand in a queue?

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  3. How many different signals can be generatd from 6 flags of different c...

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  4. Seven songs are to be rendered in a programme. In how many different o...

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  5. There are 6 items in column A and 6 items in column B. A student is as...

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  6. (i) How many three - digit numbers are there, with no digit repeated ?...

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  7. How many even numbers of three digits each can be made with the digit...

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  8. Find the number of 4-digit numbers that can be formed using the digits...

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  9. How many numbers lying between 100 and 1000 can be formed with the ...

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  10. How many 4-digit numbers can be formed by using the digits 1 to 9 i...

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  11. How many 4-digit numbers are there with no digit repeated?

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  12. How many 6-digit numbers can be formed from the digits 0, 1, 3, 5, ...

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  13. Ten horses aere running a race. IN ho wmny ways can these horses come ...

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  14. From a committee of 8 persons, in how many ways can we choose a cha...

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  15. from a pool of 12 candidates in how many ways can we select president,...

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  16. Four letters E, K, S an V, one in each, were purchased from a plastic ...

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