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

What Word am I Looking For ?

Which number should replace the question mark?

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

John was drowned by he was not wet. How?

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

What does this Rebus Picture means ?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?