What always comes into a house through the keyhole?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Which is faster, Heat or Cold ? Explain.

What does the below rebus riddle means?

Can you place six X (crosses) in below board without making three in a row in any way ?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?