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Find the total number of rectangles on t...

Find the total number of rectangles on the normal chessboard.

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CENGAGE ENGLISH-PERMUTATIONS AND COMBINATIONS-All Questions
  1. The number 916238457 is an example of a nine-digit number which con...

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  2. There are 10 points on a plane of which 5 points are collinear. Also, ...

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  3. Find the total number of rectangles on the normal chessboard.

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  4. There are 10 points on a plane of which no three points are collinear....

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  5. Find the maximum number of points of intersection of 7 straight lines ...

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  6. m equi spaced horizontal lines are intersection by n equi spaced verti...

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  7. A box contains 5 different res and 6, different whit balls. In how man...

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  8. Find number of ways that 8 beads of different colors be strung as a...

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  9. Find the number of ways in which 6 men and 5 women can dine at around ...

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  10. For examination, a candidate has to select 7 subjects from 3 different...

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  11. In how many ways the letters of the word COMBINATORICS can be arran...

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  12. A question paper on mathematics consists of 12 questions divided into ...

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  13. Find the number of all three elements subsets of the set{a1, a2, a3, ....

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  14. A bag contains 50 tickets numbered 1, ,2 3, ...50. Find the number ...

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  15. Four visitors A, B, C, D arrived at a town that has 5 hotels. In how ...

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  16. In how many shortest ways can we reach from the point (0, 0, 0) to poi...

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  17. Out of 8 sailors on a boat, 3 can work only on one particular side and...

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  18. In how many ways can 3 ladies and 3 gentlemen be seated around a ro...

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  19. In how many ways can 15 members of a council sit along a circular t...

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  20. Find the number of ways in which 5 girls and 5 boys can be arranged in...

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