World's Hardest Riddles With Answers

Suppose that the number of boys be "b" and number of girls be "g".

Now, each boy has equal number of brothers and sisters:
(b - 1) = g
=> (b - g) = 1 ------ (1)

In addition, each girl has twice as many brothers as sisters:
2 (g-1) = b
=> (2g - b) = 2 ------- (2)

From (1) and (2)
g = 3 and b = 4

Therefore, there are 4 boys and 3 girls in the family.

The number of triangles in the given figure is 24.

A = 1, B = 2, C = 3....

DEAD = 4 + 5 + 1 + 4 = 14
BALL = 2 + 1 + 12 + 12 = 27
FEAR = 6 + 5 + 1 + 18 = 30
SHOP = 19 + 8 + 15 + 16 = 58

Now, 14 < 27 < 30 < 58

Therefore, the order
DEAD, BALL, FEAR, SHOP

Its an awesome illusion vase painted with white or two faces facing each other painted in black.

The ape will be able to reach the top in 58 minutes.

Since the ape slips back two feet after climbing 3 feet every minute, he will reach 57 feet in 57 minutes. Now the remaining distance is 3 feet and the ape will take 1 more minute to reach there. He wont slip back because he has already reached the top.

Yes, you should accept the bet. Simply because the odds of picking two relatively prime numbers are 60%. It is a win-win situation for you if you keep playing.

If we assume that Rihana and Peeta pay the same amount, they can decide with "rock, paper, scissor" to determine who will pay the extra dollar. Any other method may be used as well. Suppose that Rihana pays $1 extra.

In this manner, Rihana pays $5, Peeta pays $4 and Logan pays $2.

If the pizza would have cost $11, this method will then prove to be great because both Rihana and Peeta will pay $5 each and Logan will pay $1. This will keep the offset same as previous. Rihana is paying 6% more, Peeta is paying 15% more and Logan is paying 27% more.

No

We know that both of them were lying in all their statements. Thus we can assume the opposite of what they said:

Priyanka: I am definitely over 30.
Rubina: I am not 28 and you are at most 4 years older to me.
Priyanka: You are at most 28.

Now we can conclude from the first statement that Priyanka is 31 years old at least. From the second and third statement, we can conclude that Rubina is at most 28 years old. Therefore, the possible ages of Priyanka and Rubina can be:

Priyanka: 31, 32, 33, 34, 35, 36...
Rubina: 22, 23, 24, 25, 26, 27...

If we look at the second statement again, we know the difference between their ages is a maximum of 4 years.
Therefore, Priyanka age is 31 years while Rubina age is 27.

The phrase "all but nine were lost" means that all his mugs were lost except nine.

Thus he was left with nine mugs.