What is always in front of you but can’t be seen?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

Count the number of triangles in the given picture.

Which digit occurred maximum times between the number 1 and 1000?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

Decode this picture on T-Shirt and tell what it says ?

Find the next number in the following series:
6, 14, 26, 98, __?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

What building has the most stories?

What has hands, but can’t clap?