There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

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?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

What is next number in the pattern below:

131 517 192 123 ?

Decode below rebus
D
N
A
T
S , D

Identify the 10 differences between the two given pictures.

A spaceship was lost. The detective was given a piece of paper. This was the location of the spaceship! This is what the slip had scribbled on it:
Juice, Umbrella, Potato, Ice, Tomato, Elephant, Rice.

Where is the spaceship?

What is black when you buy it, red when you use it, and gray when you throw it away?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.