Jenifer and Jesica are having a conversation.

Jenifer: I am definitely not over 30.
Jesica: I am 28 and you are surely 5 years older to me at least.
Jenifer: No, you are at least 29.

You are told that both of them are lying throughout in the conversation. Can you find their respective ages?

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.

Why do people go to bed?

How many sides does a circle have?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

What does this rebus riddle means ?

If 21x = 79x, what is the value of x?

Can you replace the question mark with the correct number?

What is the largest number you can write with just 3 digits?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?