Can you place six X (crosses) in below board without making three in a row in any way ?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

What is the difference between a jeweller and a jailer?

Replace the question mark with the correct number in the below-given picture?

A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

Which English verb becomes past tense just by rearranging the letters?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

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

When it is alive we sing, when it is dead we clap our hands. What is it?