Why Aeroplane windows are round?

When is the top of a mountain similar to a savings account?

What does this rebus means ?

PROG WORKRESS

How many triangles can you count in the figure given?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

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

What jumps when it walks and sits when it stands?

If eleven plus two equals one, what does nine plus five equal?

Chhote se Chintu Miyan,
Lambi si Pooch.
Jahan Jaye Chintu Miyan,
Wahan Jaye Pooch.

छोटे से चींटू मियाँ,
लंबी सी पूंछ।
जहाँ जाये चींटू मियाँ,
वहाँ जाये पूंछ।

Bolo kya?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.