Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

I can write cow in 13 letters.

Can You?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

What is the next number in the series?

15 29 56 108 208 ?

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?

Can you find the mistake in the below statement?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

What is common among 11, 69, and 88?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?