I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

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?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

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

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

What English word has three consecutive double letters?