Question

If mean is 20, for data 12, 22, 15, 23, k, 17, 9 then 'k' is?
(A) 40 (B) 42
ce) 47
(D) 24​

Answer 1

Answer:

B) 42

Because the total of all the numbers would be

( 98 + k )/ 7 = 20

k = 42

HOPE THIS HELPS.