The number of circles that can be drawn out of 10 points of which 7 are collinear is
130
85
45
72
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1
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If
SolutionAnswer :1/2 |
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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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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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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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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6
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From a pack of 52 playing cards, two cards are drawn together at random. Calculate the probability of both the cards being the Kings.
Solution |
7
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How many integers between 1000 and 10000 have no digits other than 4, 5, or 6?
Solution |
8
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Find the probability that a leap year selected at random will contain 53 Sundays
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9
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A fair coin is tossed 5 times. What is the probability of getting at least three heads on consecutive tosses?
Solution |
10
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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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