How many times in a given day, minutes and hour clock comes in a straight line ?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

What word begins and ends with an E, but has only one letter?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

Why did Buffon take the goal with him after every Juventus match?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

Spot what is wrong here in below Picture?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

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.