There was a strange boy who was born before his father. How can this be possible?

Can you solve the below tricky visual equation?

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

I purchased an awesome ice cream cone having 5 different flavour scoops.
Five flavours are pistachio, mint-chip, strawberry, marshmallow, and raspberry

I will give u some clues so that you can figure out the order of flavours from bottom to top.
1. The bottom flavour of the cone has 10 letters.
2. The marshmallow scoop is between the pistachio and the mint-chip scoop.
3. marshmallow is the raspberry scoop but below the mint-chip scoop.

So can you figure out the flavour of ice cream in order from bottom to top?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?