Question

It the average of 13 numbers is 40 if the average of First 7 numbers be 42 & that of last of 7 numbers be 35 find the 7th
number ​

Answer 1

Answer:

please mark me as the BRAINLIEST

Step-by-step explanation:

7th paper = 539 - 520 = 19 marks

Answer 2

Step-by-step explanation:

this is your answer I hope it is helpful