Why is a river so rich ?

Can you find out the remainder when 3^300 is divided by 5?

What jumps when it walks and sits when it stands?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

In a basket of apples,
when counted in twos, there was one extra
when counted in threes, there were two extra when counted in fours, there were three extra
when counted in fives, there were four extra
when counted in sixes, there was five extra.

However, if the apples were counted in sevens, no extra apple was left. Can you calculate the minimum number of apples that were present in the basket?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?