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The number of ways in which ten candidat...

The number of ways in which ten candidates `A_(1),A_(2),A_(3),A_(4),……,A_(10)` can be arranged in a row
If `A_(1)` is always above `A_(2)` and `A_(2)` is above `A_(3)` is

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The number of ways in which ten candidates A_(1),A_(2),A_(3),A_(4),……,A_(10) can be arranged in a row if A_(1) is just above A_(2) then the number of ways are

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Find the number of ways of arranging 15 students A_(1),A_(2),…….,A_(15) in a row such that neither A_(2) nor A_(3) be seated before A_(1)

Find the number of ways of arranging 15 students A_(1),A_(2),………A_(15) in a row such that A_(1),A_(2) and A_(3) sit together in specified order

Find the number of ways of seating 10 students A_(1), A_(2)…..A_(10) in a row such that (i) A_(1), A_(2), A_(3) sit together (ii) A_(1), A_(2), A_(3) sit in a specified order (iii) A_(1), A_(2),A_(3) sit together ina specified order.

The number of all three element subsets of set {a_(1),a_(2),a_(3),.......,a_(n)} which contain a_(3) is

The number of subsets of the set A={a_(1),a_(2),………..a_(n)} which contain even number of elements is

AAKASH SERIES-PERMUTATIONS & COMBINATIONS-EXERCISE -1.1 SHORT ANSWER QUESTIONS
  1. Find the number of ways of arranging 6 boys and 6 girls in row. In how...

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  2. Find the number of ways of arranging 6 boys and 6 girls in row. In how...

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  3. Find the number of ways of arranging 6 boys and 6 girls in a row so th...

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  4. Find the number of ways of arranging 5 different mathematics books, 4 ...

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  5. In how many ways 9 mathematics papers can be arranged so that the best...

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  6. Find the number of ways of seating 10 students A(1), A(2)…..A(10) in a...

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  7. Find the number of ways of seating 10 students A(1), A(2)…..A(10) in a...

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  8. In how many ways 10 persons A(1),A(2),A(3),A(4),………., A(10) can be sea...

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  9. The number of ways in which ten candidates A(1),A(2),A(3),A(4),……,A(10...

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  10. How many numbers that can be prepared using the digits 0,2,4,6,8 witho...

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  11. How many four digited numbers can be formed using the digits 1,2,5,7,8...

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

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  13. If the letters of the word 'RUBLE' are arranged in all possible ways a...

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  14. If the letters of the word MASTER are permuted in all possible ways an...

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  15. Find the sum of all five digited numbers that can be formed using the ...

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  16. Find the sum of all 4- digited numbers that can be formed using the di...

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  17. Find the sum of all 4 digited numbers that can be formed using the dig...

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  18. Suppose that 'n' letters are written to 'n' different persons and thei...

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  19. If the letters of the word BRING are permuted in all possible ways and...

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  20. There are 9 objects and 9 boxes. Out of 9 objects, 5 cannot fit in thr...

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