Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

I have branches, but no fruit, trunk or leaves. What am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Can you find out the total number of triangles in the given figure?

Sherlock breaks into a crime scene. The victim is the owner who is slumped dead on a chair and have a bullet hole in his head. A gun lies on the floor and a cassette recorder is found on the table. On pressing the play button, Sherlock hears the message 'I have committed sins in my life and now I offer my soul to the great Lord' and followed a gunshot Sherlock smiles and informed the police that's its a murder.

Why did he think so?

I always drive my customer away.

Who am I?

Prove that the below maths equation is true.

8 + 8 = 91

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?