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Question

Out of four numbers, the average of the first three numbers is thrice the fourth number. If the average of the four numbers is 5, the fourth number is:

a.

4.5

b.

5

c.

2

d.

4

Answer: (c).2

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Q. Out of four numbers, the average of the first three numbers is thrice the fourth number. If the average of the four numbers is 5, the fourth number is:

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