I have branches, but no fruit, trunk or leaves. What am I?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

What is always in front of you but can’t be seen?

I know a nine-letter word having only one vowel.
Do you ?

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

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

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