The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What is wrong in the below Picture?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Whats the next number in the below number sequence pattern.

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

What has a ring but no finger?

What makes this number unique: 8,549,176,320?

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

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?