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Number of divisors of the form   4n+2(n,0) of the integer 240 is

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Important Questions on Permutations & Combinations

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The number of rectangles excluding squares from a rectangle of size of 12×8 is :
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Two lines intersect at O. Points A1,A2,,An are taken on one of them and B1,B2,,Bn on the other the number of triangles that can be drawn with the help of these (2n+1) points is :
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The number of ways in which 9 identical balls can be placed in three identical boxes is:
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The number of ways in which 30 coins of one rupee each be given to six persons so that none of them receives less than 4 rupees is :
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The number of circles that can be drawn out of 10 points of which 7 are collinear is:
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The number of natural numbers of two or more than two digits in which digits from left to right are in increasing order is:
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In how many ways a cricketer can make a century with fours and sixes only?
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The number of permutations of the letters of the word LUMINARY such that neither the pattern LURY nor MINA occurs is :