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?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

Find the next number in the sequence

5 12 24 36 ?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What has no start, end, or centre?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Count the number of lines in the image below ?

What is more useful when it is broken?