When can we add 2 to 11 and get 1 as the correct answer?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

What two things can you never eat for breakfast?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?