Can you name some countries which do not have the alphabet 'A' in them?

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

Who am I?

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

What is black when you buy it, red when you use it, and gray when you throw it away?

I have branches, but no fruit, trunk or leaves. What am I?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Can you find out which number multiplied by itself will give the output as 12345678987654321?

Count the Triangle in the figure given below:

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Why is the longest human nose just 11 inches?