If a team of 4 persons is to be selected from 8 males and 8 females, then in how many ways can the selections be made to include at least 1 female
3500
1875
1750
3000
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1
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If (n + 2)! = 2550 (n!); find ’n’
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2
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How many words, with or without meaning, can be formed using all letters of the word EQUATION using each letter exactly once?
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3
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In how many ways can the letters of the word 'LEADER' be arranged?
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4
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Four letters are selected from the word “CAPAME” and are rearranged to form four letter words. How many words can be formed?
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5
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A, B, C, D and E sit on five chairs all of which are facing north. C will sit only on the leftmost chair and B will not sit anywhere to the left of A. In how many ways they can be seated?
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6
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Six boys and 4 girls are to be seated in two separate rows with five chairs each, such that two particular girls are always together and all the girls are not in the same row. In how many ways can they be seated?
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7
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A five-letter word is to be formed from a group of 5 vowels and 4 consonants, using at least one vowel and at least one consonant. In how many ways the word having a greater number of consonants than vowels can be formed?
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8
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It is required to seat 5 boys and 4 girls in a row so that the girls occupy the even places. How many such arrangements are possible?
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9
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If A, B and C are mutually exclusive and exhaustive events of a random experiment such that P(B)=3/2P(A) and P(C)=1/2P(B), then P(A∪C)=
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10
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12 person are seated at a round table. Number of ways of selecting 2 persons not adjacent to each other is
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