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

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

A person was killed at a house party. When the police arrive, there are six people present in the house who are the friends of the victim. The name of the friends is Rohit, Aman, Nick, Gagan, and Randy.

Near the dead body, they find a few numbers written with blood by the victim on the floor. The numbers are 8, 5, 4, and 11.

The police arrests one of the friends for the murder. Whom did they arrest and why?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

What has lots of eyes, but can’t see?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?