Edit MetaData
5 years, 8 months ago
Ave of 10 numbers is 12. On excluding the 10th no, the ave becomes 11. Find the 10th no.
5 years, 8 months ago
Sum of data= average x no of data
including 10th no- 12 x 10=120
excluding 10th no- 11 x 9=99
10th no=120-99
=21
ANS: 10th no= 21
Quick, Easy and Effective Revision
By proceeding you agree to create your account
Free CAT Formulae PDF will be sent to your email address soon !!!