Which wheel of car does not rotate when you turn your car right?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

When we see 2 but call 10?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

Which Travels Faster? Solve below famous picture riddle:

Can you find the six hidden animals in the picture below?

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

What does below pictogram mean?