The mean of 20 items is 55. If two items...

The mean of 20 items is 55. If two items 45 and 30 are removed, the new mean of the remaining items is:

A

65.1

B

65.3

C

56.9

D

56

Verified by Experts

The correct Answer is:

C

नया माध्य = `(20xx55-(45+30))/18`
= `(1100-75)/18=1025/18=56.94`

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