Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

What does this below rebus puzzle mean?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

What famous saying does this rebus mean?

COME SERVED <---
COME SERVED
COME SERVED
COME SERVED
COME SERVED

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

Replace the question mark in the picture below.

Decode this picture on T-Shirt and tell what it says ?