Can you solve this picture maths equation?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

How many triangles can you find in this given picture?

What is the word or phrase?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.

"deb mitciv eht edisni neddih si nopaew redrum ehT"

Tell me the location of the murder weapon.

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Which wheel of car does not rotate when you turn your car right?