Question

The mean of 5 numbers is 24. If one more number is included, then the mean is 25. Find the included

number​

Answer 1

Mean of 5 numbers = 24

Sum of 5 numbers = 24 × 5 = 120

After including one number,

Mean of 6 numbers = 25

Sum of 6 numbers = 25 × 6 = 150

Thus, the number excluded = 150 - 120 = 30

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