Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Which country gets ill every time?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

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

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Can you solve the photo plexer logic ?

Count the number of triangles in the given picture.

Find the next number in the series below

21 32 54 87 131 ?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Out of four images which one is the odd one out?