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

Explain how?

What does this rebus mean?

O
N
C
E
TIME

Why is Saturday stronger than Monday?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

What Adam and Eve do not have but the rest of the people have?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

A sundial has the fewest moving parts of any timepiece. Which has the most?

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