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

What Word am I Looking For ?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?

Can you decipher the two rows to find the hidden word?

What is the largest number you can write with just 3 digits?

Which tank will fill first?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

What is the below Rebus indicate?

What has no start, end, or centre?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?