Question

1. The mean of 10 numbers is 30. If one number is included then the mean is 32. Find the included number.​

Answer 1

Answer:

Included number is 52

Step-by-step explanation:

1) mean = sum of scores ÷ no. of scores

30 = sum of scores ÷ 10

sum of scores = 30 × 10

sum of scores = 300

2) mean = sum of scores ÷ no. of scores

32 = 300 + x ÷ 11

32 × 11 = 300 + x

352 = 300 + x

x = 352 - 300

x = 52

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Answer 2

52 because in number 10 20 is added so the answer was 30. So,in 32 if 20 is added so it’s 52