Question

The mean of five numbers is 26, if sum of four numbers is 110, find the fifth number​

Answer 1

THE MEAN OF 5 NUMBERS = 26

THE SUM OF 5 NUMBERS = 26 * 5

= 130

THE SUM OF 4 NUMBERS = 110

THE REQUIRED 5TH NUMBER

= 130 - 110

= 20 ANS

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Answer 2

ANSWER

Mean of 5 no.s = 26

Sum of four no.s = 110

Mean = Sum of no.s ÷ total no.s

Let 5th no. be x

So,

Mean = (Sum of 4 no.s + x) ÷ 5

(110 + x)/5 = 26

110 + x = 26 × 5

x = 130 - 110

x = 20

So, 5th no. will be 20