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

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

What is the longest word in the dictionary?

When 99 is considered higher than 100?

Can you spot the man between the coffee bean in the picture below ?

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

What is common among 11, 69, and 88?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?