How many four-digit numbers, each divisible by 4 can be formed using the digits 5, 6, 7, 8, 9, repetition of digits being allowed in any number?
75
100
125
150
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1
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There are three rooms in a motel: one single, one double, and one for four persons. How many ways are there to house seven persons in these rooms?
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2
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How many integers between 1000 and 10000 have no digits other than 4, 5, or 6?
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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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Three unbiased coins are tossed. What is the probability of getting at most two heads ?
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5
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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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6
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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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7
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How many numbers can be formed from 1, 2, 3, 4, 5 (without repetition), when the digit at the unit’s place must be greater than that in the ten’s place?
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8
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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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9
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There are 6 letters for 3 envelopes. In how many different ways can the envelopes be filled?
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10
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How many parallelograms will be formed if 7 parallel horizontal lines intersect 6 parallel vertical lines?
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