Cristina was born in 1888. She just had her 30th birthday today how did that happen?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

The dirtier I get, the whiter I look. Who am I?

Buy me, smell me or deliver me, I do not change.

Who am I?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

What does this rebus puzzle means ?