Can you count the number of matches in the picture below ?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

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?

What makes this number unique: 8,549,176,320?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

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