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MODERN PUBLICATION-PERMUTATIONS AND COMBINATIONS -Multiple Choice Questions - LEVEL - II
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- Number of positive integral solutions of : x1x2x3=30 is
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- If x,y,z are integers and x ge 0 , y ge 1 , z ge 2 , x+y+z = 15 , then...
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- Sum of non - negative integral solutions of : x1+x2+.......+xnle x (...
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- There are n straight lines in a plane, no two of which are parallel, a...
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- There are p,q,r points on three parallel lines L1,L2 and L3 respective...
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- If 'P' is a prime number such that p ge 23 and n+ p! + 1 , then the n...
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- If a, b,c are three rational numbers in A.P. and a +b+c = 21 , then th...
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- If an=sum(r=0)^n1/(""^nCr) , then sum(r=0)^nr/(""^nCr) equals :
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- The number of seven digit integers with sum of the digits equal to 10 ...
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