In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

Can you find the missing piece of the Porsche?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

I know a nine-letter word having only one vowel.
Do you ?