Question

11. The mean of five numbers is 30. If one number is excluded their mean
becomes 28 find the excluded number.
12. The points scored by a basketball them in a series of matches as follows
17, 2,7,27,25,5,14,18,10. Find the median.

Answer 1

Step-by-step explanation:

11.  total mean = 30

let nos. be x

30 = x/5

150 = x

excluded mean = 28

if 1 no. is excluded total nos. left are 4

let nos. be x'

28 = x'/4

112 = x'

subtract x' from x

150 - 112

38 ans