How many letters are in the alphabet?

While sitting in the Car, John suddenly finds that one of the wheels was missing. John noticed that a killer is approaching towards him. John cannot get out of the car.

How will John escape?

Count the squares in the matchstick puzzle below?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

In the image given, you can find several triangles. Can you count them all?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

Prove that the below maths equation is true.

8 + 8 = 91

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?