You need to move three matchsticks to form three squares. Can you do it?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

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?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

What is the end of everything?

Which flower has two lips?

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?