Replace the question mark with the correct number below.

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.

Move four matchsticks to the below square to form three squares?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

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

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?