What four weights can be used to balance from 1 to 30 pounds?

Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

What does this mathematical rebus means ?

Which tank will fill first?

I know a nine-letter word having only one vowel.
Do you ?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

Count the number of lines in the image below ?

Which Burger Is Different in below image?