If the average of 7 different continuous serial numbersis 20 then whic

1.	If the average of 7 different continuous serial numbersis 20 then which of the following is the largest numberamong 7 different numbers?
Answer» Let the numbers be x, x + 1, x + 2, x + 3, x + 4, x + 5 and x + 6, Then (x + (x + 1) + (x + 2) + (x + 3) + (x + 4) + (x + 5) + (x + 6)) / 7 = 20. or 7x + 21 = 140 or 7x = 119 or x =17. Latest number = x + 6 = 23. Awesome Solution. Take the numbers as x-3, x-2, x-1, x, x+1, x+2, x+3 gives a faster answer the right answer is 23

If the average of 7 different continuous serial numbersis 20 then which of the following is the largest numberamong 7 different numbers?

Answer»

Let the numbers be x, x + 1, x + 2, x + 3, x + 4, x + 5 and x + 6,

Then (x + (x + 1) + (x + 2) + (x + 3) + (x + 4) + (x + 5) + (x + 6)) / 7 = 20.

or 7x + 21 = 140 or 7x = 119 or x =17.

Latest number = x + 6 = 23.

Awesome Solution. Take the numbers as x-3, x-2, x-1, x, x+1, x+2, x+3 gives a faster answer

the right answer is 23