1.

The average marks of 50 students in an examination was 65. It was later found that the marks of one student had been wrongly entered as 83 instead of 38. The correct average is:1). 63.92). 64.53). 64.74). 64.1

Answer»

According to the PROBLEM statement

⇒ New AVERAGE = (50 × 6583 + 38)/50

⇒ New average = 3205/50 = 64.1

∴ New average is 64.1


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