In how many different ways can the letters of the word 'CORPORATION' be arranged so that the vowels always come together?
50400
2430
6540
12800
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2
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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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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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5
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The value of ^{75}P_{2}
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7
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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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In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?
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9
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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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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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