RRB Non Technical Model Papers 8 with solutions

Question : 7 of 100

Marks: +1, -0

The average of 30 numbers is 24. If two numbers namely 36 and 40 are discarded, what is the average of the remaining numbers?

Solution:

(1) Sum of 30 numbers = 30 × 24
= 720 Sum of remaining numbers
= 720 – (36 + 40) = 720 – 76
= 644 ∴ Average of 28 numbers

= 644/28= 23

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