What goes up but never comes down?

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

Can you solve the below geography rebus by decoding the below rebus ?

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

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

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

What am I?

Can you find out which options fits best with the missing column?

What is red and smells like blue paint?

Can you solve the maths in the below-given picture equation?