What goes up but never comes down?

What has 88 keys?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

What do you see in the image below

Move four matchsticks to the below square to form three squares?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?