The average of 7 consecutive numbersis 20. The largest of these numbersis
Show answer & explanation
Correct answer: B
Explanation
The correct option is 2.
let the consecutive no be x, x + 1, x + 2, x + 3, x + 4, x + 5, x + 6
sum of all consecutive numbers = x + x + 1 + x + 2 + x + 3 + x + 4 + x + 5 + x + 6 = 7x + 21 = 7(x + 3)
average = 
given average = 20
20 = 
= x + 3
x + 3 = 20
=> x = 17
largest number is x + 6 = 17 + 6 = 23