By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Can you find out the total number of triangles in the given figure?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Can you solve the maths in the below-given picture equation?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Find the Goldfish below the given Image.

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

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