Solution:

Playing chess

Game needs two players so Brother-8 is playing chess with Brother-2

Solution:

We have done it for you in the picture itself. We think that you can understand what we did by looking at it.

Solution:

Here is a way to do it. We dont know if it can be done using some other arrangement or not. If you know, do send us.

4 | 3 | 8
9 | 5 | 1
2 | 7 | 6

Solution:

The attached picture shows you how you can do it. If you were able to deduce any other way, feel free to comment.

Solution:

Rohan kept his finger in the center of the table (not the exact center). The interviewer asked him how he was so sure that this was the exact center. He told the interviewer that according to the interviewer, his last question had already been asked.

The interviewer was impressed by his quick witted brain and he was offered the job.

Solution:

Look at the eyes of all the three images. The second one has eyes positioned at different places. This is why the second image is the odd one out.

Solution:

First notice what is written with black ink. You will find the word - Good. Inside those letters, you will see the white space. In the white space, the word "evil" has been written.
If you think of it in a psychological manner, you will be able to understand the hidden meaning. It suggests that "Good" is nothing but the absence of evil.

Solution:

As shown in the picture below, you should tilt the barrel so the liquid will touch the upper end of the barrel. So if the bottom part of the barrel is visible then it's not half full.

Solution:

4%

Explanation:
The winning chance probability is still 4% as the outcome of Samuel winning the lottery is a separate event from the 1st four losing it.

Solution:

They were the same person "Grover Cleveland".