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  • Question 1
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    If m + nP2 = 90 and m – nP2 = 30, then (m, n) is given by -

  • Question 2
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    Ten different letters of an alphabet are given. Words with five letters are formed from these given letters. Determine the number of words which have at least one letter repeated.

  • Question 3
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    How many numbers of four digits greater than 2300 can be formed with the digits 0, 1, 2, 3, 4, 5 and 6; no digit being repeated in any number?

  • Question 4
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    There are m men and n monkeys (n > m). If a man have any number of monkeys. In how many ways may every monkey have a master?

  • Question 5
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    How many 7 digit numbers can be written using three digits 1, 2 and 3 under the condition that the digits 2 occurs twice in each number ?

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