Can you count the number of triangles in the given figure?

Find the missing number in the sequence below:

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

James bond was pushed out of an aeroplane without any parachute.
He survived, How come?

A bomb exploded in a room full of married couples and no one died. How?

How do you go from 98 to 720 using just one letter?