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

What Word am I Looking For ?

What can go up a chimney down, but can’t go down a chimney up?

What's a single-digit number with no value?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

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

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

If you say my name, I will no longer exist. What am I?

Take away the whole and some still remain. What is it?

Can you spot the hidden girl in the picture below?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.