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?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

Using eight eights and addition only, can you make 1000?

Find the next number in the sequence

5 12 24 36 ?

Can you find out the remainder when 3^300 is divided by 5?

Rearrange the letters in "new door" to make one word.

What is the next number in this series?

4,12,84,3612....