The number of ways of selections one ...

The number of ways of selections one or more out of 7 given things is

128

127

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Assertion (A) : A question paper contains 5 questions each having an alternative. The number of ways that an examinee can answer one or more questions is 242. Reason (R): The number of ways of answering one or more of n questions when each question have an alternative is 3^(n)-1 . The correct answer is

IF a is the number of ways of selecting 3 men from 6 men , b is the number of ways of selecting 2 men , 1 women from 4 men and 2 women and c is the number of ways of selecting 1 man , 2 women from 3 men and 3 women then the ascending of a,b,c is

DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1B (COMBINATIONS )

a man has 4 friends , in how many ways can he inivite one or ...
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The number of ways in which a man can invite one or more of hi...
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The number of ways of selections one or more out of 7 given t...
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There are 10 lamps in a hall . Each one of them can be swith...
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A question paper contains 6 question each having an alternativ...
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Each of the four questions in a multiple choice test has 4 pos...
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In an examination there are there are three multiple choice qu...
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The number of ways in which the following prizes be given to ...
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The number of all three element subsets of the {a1,a2 ,a3 ,… an}...
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The number all three element ofsubsets of the set A = {a1 ,a2 , . ....
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If one quarter of all three element subsets of the set A = { a1...
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The number of subsets of {1,2,3,. . . .9} conatining at least one ...
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If a set A has 5 elements , then the number of ways of selectin...
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Given 5 different green dyes 4 different blue dyes and 3 diffe...
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