What occurs twice in a week, once in a year but never in a day?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

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?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

What does this Rebus Picture mean?

How many times can you subtract the number 5 from 25?

What do you answer even though it never asks you questions?

What has 13 hearts but no other organs?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?