World's Hardest Riddles With Answers

In House H2, we know that older child is boy, therefore there are two cases
Older Younger
Boy Girl
Boy Boy
Probability of at least one girl child: 1/2

In House H1 there are three cases
Older Younger
Boy Girl
Boy Boy
Girl Boy
Probability of at least one girl child: 2/3

Remove the same 2 matchsticks from each figure and move figure towards left 45 degrees, It forms the letters V W X Y.

13 numbers

Since we are looking to find odd reminder which implies that the remainder will be either 1 or 3
Therefore number must follow below two conditions:
A) We can list number 5n + 1 or 5n + 3. (where n = 0,1,2,3.....)
B) The number must end in 1 or 3.

List of such numbers less than 100 are:
1, 3, 11, 13, 21, 23, 31, 33, 41, 43, 51, 53, 61, 63, 71, 73, 81, 83, 91, 93

Let us remove the nonprime ones which are 1, 21, 33, 51, 63, 81 and 91

So, I will be left with 13 numbers which fit the bill.
3, 11, 13, 23, 31, 41, 43, 53, 61, 71, 73, 83 and 93

Are you John

Below will be the reply of three brothers:
Frank: No (speaks truth)
John: No (speaks lie)
Wayne: Yes (speaks lie)

Therefore if its Wayne then only you will get a reply as "Yes" and then you ask for your money.

3rd.

Its the only image where all the three arrows curved in the same direction.

It can be done as shown below

Forest Gump FOR (4 o clock) + REST (person resting in bed) + GUMP (bubble gum + p)

Congratulations

Explanation:
Message Was: Carrot Dumbo Nazzi Racing Ronda Zambia TinTin Seou Laltain Zareeba Tar Biscotti Orphan Audition Snake

Pick the 1st letter of the first word, 2nd letter of the second word, Pick 1st letter from the third word and so on.

Carrot - C
Dumbo - O
Nazi - N
Racing - G
Ronda - R
Zambia - A
TinTin - T
Seou - U
Laltain - L
Zareeba - A
Tar - T
Biscotti - I
Orphan - O
Audition - N
Snake - S

You can divide the matchsticks as shown below.

Image 5 as this is the only image that is the part of the connecting images as shown below.