Question

find the six number of 35 that of the first 5 is 33 find the sixth number?​

Answer 1

Here is your answer

Average of 11 years = 30

Sum of 11 numbers = 30*11 = 330

Average of first 6 numbers = 17.5

Sum of first 6 numbers = 17.5*6 = 105

Sum of last 6 numbers = 42.5

Average of last 6 numbers = 42.5*6 = 255

Sum of first 6 + last 6 numbers = 255 + 105 = 360

but 6th terms is added 2 times 360 - 330 = 6th terms

The sixth terms is 30......