Find The Odd One Out

1. FLOW
2. SNIP
3. TRAP
4. DRAW
5. BACK

Can you find a five letter word that is left with only two letters if one is removed?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

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

which number am I?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

Where do fish keep their money?

Can you replace the question mark with the correct number?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

What has no start, end, or centre?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?