How is a fly different from a mosquito?

81 x 9 = 801. What must you do to make the this equation true?

Move three sticks of the spiral below to form a square.

When can we add 2 to 11 and get 1 as the correct answer?

What Deficiency does the below rebus represent?

VIT_MIN

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

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?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

What time is it when an elephant sits on a fence?