What is harder to catch the faster you run?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

If eleven plus two equals one, what does nine plus five equal?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

Who are the happiest people in IPL match?

What type of tree can I carry in my hand?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

What is next number in the pattern below:

131 517 192 123 ?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

What can you hold in your right hand, but never in your left hand?