Before Mount Everest was discovered, what was the highest mountain in the world?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

I have Rs.50 and I spend it in the way as below.

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

In the image given, you can find several triangles. Can you count them all?

Look at the picture and find out which square is not linked with any of the other squares.

Who are the happiest people in IPL match?

You have 1023 apples and 10 bags. You have to distribute these apples in these 10 bags in any way you choose. But when I ask for a certain number of apples you have to give them in terms of bags without transferring the apples from other bags. How do you distribute the apples?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL