I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

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

Spot what is wrong here in below Picture?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

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

How can you tell a raw egg from a hard-boiled egg?

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