How many times in a given day, minutes and hour clock comes in a straight line ?

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

Which alphabet is a part of our body?

Prove that twice of ten is the same as twice of eleven.

Can anyone tell me a word in the English dictionary which has a silent 'z'?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

John and his wife were living in a rural place. On a particular day, John's wife fell ill and he called the local doctor. When the doctor picked up, he said, "Doctor, my wife is ill. She might have appendicitis."

"This can't be possible! I took out her appendix two years ago myself," the doctor explained.

When diagnosed, John's wife was found to have appendicitis. How can this be possible?

What is the word or phrase?