What is harder to catch the faster you run?

People make me, save me, change me, raise me. What am I?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

While house hunting in London, I came across a very good leasehold property Discussing the lease the landlady told me:

'The property was originally on a 99 years lease and two-thirds of the time passed is equal to four-fifths of the time to come. Now work it out for yourself and see how many years are to go!

Move three sticks of the spiral below to form a square.

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

Spot 5 differences in two Christmas tree below:

Two old friends, Jack and Jill, meet after a long time, and discussing as:

Jack: Hey, how are you, man?

Bill: Not bad, got married and I have three kids now.

Jack: That's awesome. How old are they?

Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.

Jack: Cool..But I still don't know.

Bill: My eldest kid just started taking piano lessons.

Jack: Oh, now I get it.

How old are Bill's kids?

Which alphabet is a part of our body?