Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

What does this rebus means ?

PROG WORKRESS

Name a key which is hardest to turn.

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)

10+10 and 11+11 can give you the same answer.

Explain how?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Can you count the number of triangles in the picture below?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

Rearrange the letters in "new door" to make one word.

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?