John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

You have two jars of chocolates labelled as P and Q. If you move one chocolate from P to Q, the number of chocolates on B will become twice the number of chocolates in A. If you move one chocolate from Q to P, the number of chocolates in both the jars will become equal.

Can you find out how many chocolates are there in P and Q respectively?

An ant is travelling on a 1-meter-long rope at 1 cm/second but also the entire rope is being stretched by an extra 1 meter/second. Is it possible for the ant to reach at the end of the rope?

What does does this rebus picture means ?

Buy me, smell me or deliver me, I do not change.

Who am I?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?