Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Rihana, Peeta, and Logan order a pizza for $10. Out of the three, Rihana and Peeta were quite hungry and ate 6 slices a piece, while Logan had just 2 slices.

Now, they want to split the cost among them fairly but due to the lack of change, they decide to round off the cost to the nearest possible dollar.

Can you find out the fairway which should be used to split the money?

What if the pizza was worth $11?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

How many triangles do you see in the picture puzzle below?

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

An ant is travelling on a 1-meter-long rope at 1 cm/second but also the entire rope is being stretched by an extra 1 meter/second. Is it possible for the ant to reach at the end of the rope?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?