Can you convert the number zero(0) into a positive number using just one mathematical operator ?

A gardener planted the Lemon trees in a mathematical ordered way (i.e. he planted a tree in rows).
He created a total of 19 rows of trees.

Note: There should be more than 2 trees to count as a row.

What is the minimum number of trees required by the gardener to have 19 rows of trees?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

What does the below rebus puzzle mean?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

Can you find a five letter word that is left with only two letters if one is removed?

What makes this number unique: 8,549,176,320?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C