How many words, with or without meaning, can be formed using all letters of the word EQUATION using each letter exactly once?
38,320
39,320
38,400
40,320
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1
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In how many ways can 10 people line up at a ticket window of a railway station?
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2
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In a single throw with four dice,the probability of throwing seven is
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3
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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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4
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From a group of 7 men and 6 women, five persons are to be selected to form a committee so that at least three men are in the committee. In how many ways can it be done?
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5
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6
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A fair coin is tossed 5 times. What is the probability of getting at least three heads on consecutive tosses?
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7
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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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8
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In how many different ways can the letters of the word 'OPTICAL' be arranged so that the vowels always come together?
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9
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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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10
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A coin is tossed 5 times. What is the probability that head appears an odd number of times?
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