A speaks truth in 75% cases and B in 80% of the cases. In what percentage of the cases are they likely to contradict each other, narrating the same incident?
5%
15%
35%
45%
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1
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In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there?
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2
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In a simultaneous throw of two dice, what is the probability of getting a total of 7?
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3
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Three chairs are arranged in a row facing three other chairs. 4 boys and 2 girls are to be seated on these chairs such that girls are always facing each other. In how many ways can they be seated?
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4
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How many 3-digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9, which are divisible by 5 and none of the digits is repeated
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5
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If
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6
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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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7
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In how many different ways can the letters of the word 'CORPORATION' be arranged so that the vowels always come together?
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8
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Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart, is
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9
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In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?
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10
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If four dice are thrown together, then what is the probability that the sum of the numbers appearing on them is 25 ?
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