I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

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?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

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?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Buy me, smell me or deliver me, I do not change.

Who am I?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

Which is faster, Heat or Cold ? Explain.

Where do you go to learn how to make ice cream?