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 find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

What Deficiency does the below rebus represent?

VIT_MIN

Find the missing number in the sequence below:

John and his wife were living in a rural place. On a particular day, John's wife fell ill and he called the local doctor. When the doctor picked up, he said, "Doctor, my wife is ill. She might have appendicitis."

"This can't be possible! I took out her appendix two years ago myself," the doctor explained.

When diagnosed, John's wife was found to have appendicitis. How can this be possible?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

How many triangles are there on the puzzle below?

You need to move three matchsticks to form three squares. Can you do it?

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