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Out of 8 gentlemen and 5 ladies a commit...

Out of 8 gentlemen and 5 ladies a committee of 5 is to be formed. Find the number of ways in which this can be done so as to include atleast 2 ladies.

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AAKASH SERIES-PERMUTATIONS & COMBINATIONS-ADDITIONAL SOLVED EXAMPLES
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  8. Find the number of proper divisors of 2520. How many of them are div...

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  9. How many selections of atleast one red ball can be made from 4 red bal...

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  10. Find the number of ordered pairs (x,y) such that L.C.M. of x and y is ...

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  11. Find the number of non negative integral solutions of x(1)+x(2)+x(3)+x...

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  12. Find the number of integral solutions of x(1)+x(2)+x(3)+x(4)=4 where e...

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  13. How many integral solutions are there to the systems of equations x(1)...

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  14. In how many ways can 5 post letters of which 3 are alike and two are d...

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  15. Find the number of positive integral solutions of x(1)x(2)x(3)x(4)=105...

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  16. Find the number of positive integral solutions of x(1)x(2)x(3)=30.

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  17. Find the number of positive integral solutions of x(1)x(2)x(3)=54 wher...

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  18. Find the number of non-negative solution of 3x+y+z=24

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  19. In how many ways the number 18900 can be split in to two factors which...

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  20. What is the largest positive integer n such that lfloor33 is divisible...

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