Latest MBA Aptitude Question SOLUTION: How many four-digit numbers can be made by using exactly three different digits among the digits 4, 5, 6 and 7?

1) 156
2) 124
3) 132
4) 144
5) 120

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Previous Question: Four people attended a party. Each of them brought along his ipod and kept it on a desk when he arrived at the party. One of them got a call and left the party in a hurry. While leaving, the person picked one of the ipods at random and left. From the second person onwards, each person picked his ipod, if it was there on the desk, else he picked up an ipod at random and left. What is the probability that the last person leaving the party will get his own ipod?(1) 5/12 (2) 13/24 (3) 1/4 (4) 1/2At least One approach

1) A
2) B
3) C
4) D
Next Question: Four triangular gardening plots form a square as in the figure shown. A gardener will plant flowers so that each plot contains one kind of flower, and flowers in plots which share a common edge are different. How many choices does the gardener have if the flowers can be roses, carnations, daisies, lillies, or tulips?

1) 260
2) 280
3) 890
4) 900

(#M40017011) MBA question permutations and combinations, probability Keep an EYE

How many four-digit numbers can be made by using exactly three different digits among the digits 4, 5, 6 and 7?

1) 156
2) 124
3) 132
4) 144
5) 120

Asked In MBA (12 years ago)

Unsolved Read Solution (1)

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Read Solution (1) :

Brij  (12 years ago)

144

4*3*4!/2! =144

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Previous Question: Four people attended a party. Each of them brought along his ipod and kept it on a desk when he arrived at the party. One of them got a call and left the party in a hurry. While leaving, the person picked one of the ipods at random and left. From the second person onwards, each person picked his ipod, if it was there on the desk, else he picked up an ipod at random and left. What is the probability that the last person leaving the party will get his own ipod?(1) 5/12 (2) 13/24 (3) 1/4 (4) 1/2At least One approach

1) A
2) B
3) C
4) D
Next Question: Four triangular gardening plots form a square as in the figure shown. A gardener will plant flowers so that each plot contains one kind of flower, and flowers in plots which share a common edge are different. How many choices does the gardener have if the flowers can be roses, carnations, daisies, lillies, or tulips?

1) 260
2) 280
3) 890
4) 900

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