One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

A father's child, a mother's child, yet no one's son.

Who am I?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?