If the arithmetic mean of 7, 8, x, 11, 14 is x, then x =
Terms are 7, 8, x, 11, 14
No of terms = 5
We know that
Mean 
⇒ 5x = x + 40
⇒ 4x = 40
⇒ x = 10
Hence, correct option is (C)
29
If the arithmetic mean of 7, 8, x, 11, 14 is x, then x =
Terms are 7, 8, x, 11, 14
No of terms = 5
We know that
Mean
⇒ 5x = x + 40
⇒ 4x = 40
⇒ x = 10
Hence, correct option is (C)