How many words can be formed from the letters of the word "SIGNATURE" so that vowels always come together.
17280
4320
720
80
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1
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Find the number of ways in which mixed double tennis game can be arranged amongst 9 married couples if no husband and wife play in the same game
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2
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In how many different ways can the letters of the word 'DETAIL' be arranged in such a way that the vowels occupy only the odd positions?
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3
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The value of ^{75}P_{2}
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4
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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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5
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How many integers between 1000 and 10000 have no digits other than 4, 5, or 6?
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6
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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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7
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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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8
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How many 5 digit even numbers with distinct digits can be formed using the digits 1, 2, 5, 5, 4?
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9
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A fiveletter 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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10
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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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