Question

Question comping up!

Answer 1

Try this one.

Answer 2

Average of the 10 numbers is -10
=> sum of the 10 numbers is -10 x 10 = -100
Sum of the 6 of them = 100
=> sum of the other 4 = -100 - 100 = -200
Average of the other 4 = sum of the 4 numbers / 4 = -200/4 = ...

Answer 3

Wow, Awesome. Thanks @Callisto .

Answer 4

Welcome... Not sure if it is correct though..

Answer 5

The answer is -50.. So you are correct.

Answer 6

Oh.. Thanks! Do you understand my workings though?

Answer 7

Here's what the book says..
Q45.

And yes! I tolally understand that. =D

Answer 8

I was unable to get it's working... And the explaintion in the book was not enough.
But now i understand it completely.

Answer 9

Great :D
I don't really like it when the book says 'obviously' or 'clearly'....
And as you've mentioned, it eliminate C, D and E but doesn't explain why A is not correct :|

Answer 10

Yup! but i get it now. (:

Answer 11

Glad to hear that!