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The average of 6 observations is 45 5 If one new...

This question belongs to Arithmetic Ability Average
Average
?

The average of 6 observations is 45.5. If one new observation is added to the previous observations, then the new average becomes 47. The new observation is-

Answer & Solution
Correct Answer: Option C
New observation
= (47 × 7) - (45.5 × 6)
= 329 - 273
= 56
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