In a single throw with four dice,the probability of throwing seven is
20/6^{4}
24/6^{5}
22/8^{4}
24/8^{4}
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1
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Two variants of the CAT paper are to be given to 12 students. In how many ways can the students be placed in two rows of six each so that there should be no identical variants side by side and that the students sitting one behind the other should have the same variant. Find the number of ways this can be done
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2
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In how many ways the letters of the word “UNDERDOG” can be arranged such that the first and last letters are same and no two vowels are together?
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3
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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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4
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Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?
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5
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How many rectangles can be formed out of a chess board ?
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6
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If A and B are two independent events with P(A) = 3/5 and P(B) = 4/9 , then P(A' ∩ B' ) equals
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7
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A number lock on a suitcase has 3 wheels each labeled with 10 digits from 0 to 9. If the opening of the lock is a particular sequence of three digits with no repeats, how many such sequences will be possible?
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8
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How many integers between 1000 and 10000 have no digits other than 4, 5, or 6?
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9
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Three unbiased coins are tossed. What is the probability of getting at most two heads ?
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10
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One red flower, three white flowers, and two blue flowers are arranged in a line such that
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