Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

In the given picture, in how many ways can you read the word "Tiger"?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

Which is the smallest number that you can write using all the vowels exactly once?

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

If eleven plus two equals one, what does nine plus five equal?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.