Question

The mean of 11 numbers is 35.if the mean of last 3 numbers is 16. if the last number is 19.then the frst number is

Answer 1

sum of 11 nos/11= 35

sum of 11 nos= 35 x 11= 385

mean of last 3 nos=16

means sum of last 3 nos= 16 x 3= 48

last no= 19

therefore last 2= 48-19=29

first no = half of 29 or something idk