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

Can you count the number of quadrilaterals in the picture below?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

What is the next number in this series?

4,12,84,3612....

Replace the question mark in the picture below.

Count the number of triangles in the given picture.

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

What has hands, but can’t clap?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?