The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Can you count the number of lines in the below picture?

The king of Octopuses has servants who have six, seven or eight legs. The distinguishing characteristics of the servants is that the one with seven legs always lie but the one with either six or eight legs speak the truth always.

One day, four servants meet and converse:

The black one says, 'We have 28 legs altogether.'

The green one says, 'We have 27 legs altogether.'

The yellow one says, 'We have 26 legs altogether.'

The red one says, 'We have 25 legs altogether.'


Can you identify the colour of the servant who is speaking the truth?

What is the next number in this series?

4,12,84,3612....

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Find the missing number in the image below.

I have teeth but i don't bite. Who Am I ?