If 21x = 79x, what is the value of x?

Readers with high attention to detail can spot the cheater in the exam hall in 5 seconds. Are you one of them? Test your visual skills now!

What type of tree can I carry in my hand?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

In a school, 280 students studied chemistry, 254 students studied physics and 280 students studied biology.

97 students studied chemistry as well as physics, 138 students studied physics as well as biology and 152 students studied chemistry as well as biology.

73 students studied all the three branches.

Can you find out the total number of students?

The centre of the third figure is empty. What digit should fit inside?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Can you move 2 matchsticks to form four equal sized squares.

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

What is 3/7 chicken, 2/3 cat and 2/4 goat?