What's the best place to go shopping in the ocean?

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

Solve the alphametic puzzle by replacing the alphabet with the number.

S T O R M +
S O L E S
=========
T O W E L
=========

Which tank will fill first?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

Decode below rebus
D
N
A
T
S , D

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?