RRB Assistant Loco Pilot and Technician Model Paper 1 with solutions

Question : 7 of 100

Marks: +1, -0

The average of 5 consecutive numbers is n. If the next two numbers are also included, the average of the 7 numbers will

increase by 2
increase by 1
remain the same
increase by 1.4

Solution:

(b) Let the numbers be n – 2, n – 1, n, n + 1 andn + 2. Their average = n.
Next two consecutive numbers are n + 3and n + 4.
Therefore the average of 7 consecutivenumbers
=

{(n-2)+(n-1)+n+(n+1)+(n+2)+(n+3)+(n+4)}/7

{5n+2n+7}/7

= n+1

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