You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

Can you find out the missing number in the grid?

What do you see in the given picture?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

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.

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Imagine you are in a room with no windows or doors. How will you get out?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?