What does below pictogram mean?

Which English verb becomes past tense just by rearranging the letters?

What is next number in the pattern below:

131 517 192 123 ?

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?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

What Does this text mean:

important=important

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Why Wine Glass Stem is so long?