Question

If the average of 7 different continuous serial
numbers is 20 then which of the following is the
largest number among 7 different numbers?
(A)24 (B)23 (C)22 (D)20​

Answer 1

Answer:

B) 23

Explanation:

Let the numbers be x, x + 1, x + 2, x + 3, x + 4, x + 5 and x + 6,

Then (x + (x + 1) + (x + 2) + (x + 3) + (x + 4) + (x + 5) + (x + 6)) / 7 = 20.

or 7x + 21 = 140 or 7x = 119 or x =17.

Latest number = x + 6 = 23.

Step-by-step explanation:

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