I am an odd number. Take away a letter and I become even. What number am I?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

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

It belongs to you, but other people use it more than you do. What is it?

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

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Buy me, smell me or deliver me, I do not change.

Who am I?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?