Missing value from meanmediumFree question
Missing value from mean Numerical Reasoning Question
The mean of 5 numbers is 58. 4 of them are 30, 60, 63, 62. What is the missing number?
Show worked solution
Total = mean × count. Subtract the known values from the total to find the missing one. The correct answer is 75. Traps to avoid: 290 comes from the "gave the total" error; 53 comes from the "mean of known" error; 17 comes from the "arithmetic slip" error; 58 comes from the "gave the mean" error.
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