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

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Can you count the number of triangles in the given picture?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

Count the number of triangles in the given picture.

Solve the equation in the image by looking at the pattern closely.

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

You can hear me, but you can't touch or see me.

What am I?

John was piloting a plane behind a car but was never able to overtake it. Why?