Question

The average of 7 consecutive numbers is 20. The largest of these numbers is:
Select one
a. 23
0.24
0 2.21
d. 22​

Answer 1

Answer:

23

Step-by-step explanation:

Let the 7 consecutive numbers be n-3, n-2, n-1, n, n+1, n+2 and n+3.

Given

Average (Mean) of the 7 numbers = 20

⇒Sum of the numbers/ Total no. of observations = 20

Sum of the numbers = n-3 + n-2 + n-1 + n + n+1 + n+2 + n+3 = 7n

⇒7n / 7 = 20

∴n = 20.

The largest of the given numbers is n+3.

∴The largest  number = n+3 = 20+3 = 23