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 a single throw with four dice,the probability of throwing seven is
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10
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A teacher has to choose the maximum different groups of three students from a total of six students. Of these groups, in how many groups there will be included in a particular student?
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2
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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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3
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Two variants of the CAT paper are to be given to 12 students. In how many ways can the students be placed in two rows of six each so that there should be no identical variants side by side and that the students sitting one behind the other should have the same variant. Find the number of ways this can be done
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4
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A number lock on a suitcase has 3 wheels each labeled with 10 digits from 0 to 9. If the opening of the lock is a particular sequence of three digits with no repeats, how many such sequences will be possible?
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5
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How many parallelograms will be formed if 7 parallel horizontal lines intersect 6 parallel vertical lines?
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6
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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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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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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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9
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In a simultaneous throw of two dice, what is the probability of getting a total of 7?
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