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The mean of 5 numbers is 18 If one number is...

This question belongs to Arithmetic Ability Average
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The mean of 5 numbers is 18. If one number is excluded, their mean is 16. Find the excluded number.

Answer & Solution
Correct Answer: Option B
Excluded number
= (18 × 5) - (16 × 4)
= 90 - 64
= 26
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