Why are all black people so quick ?

How many letters are in the alphabet?

Forwards I am heavy, backward I am not. What am I?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?