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?

In the four images below, can you find the odd one out?

Decode below rebus
D
N
A
T
S , D

People put me on the table and cut me but do not eat me. What am I?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

What is harder to catch the faster you run?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Identify the 10 differences between the two given pictures.

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?