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.

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

What is the fastest way to double your money?

How many words can a pen with half refill write?

Can you count the number of quadrilaterals in the picture below?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

What Deficiency does the below rebus represent?

VIT_MIN

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

What does this below rebus puzzle mean?