The more of this there is, the less you see. What is it?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

In which direction should the missing arrow point?

People make me, save me, change me, raise me. What am I?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

What is the probability of choosing the correct answer at random from the options below?

a) 1/4
b) 1/2
c) 1
d) 1/4

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

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?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?