MRS BIANCA HAS SEVEN CHILDREN HALF OF THEM ARE GIRLS WHAT ARE THE OTHER HALF RIDDL RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

Current Future Past

Princess x 2z (x+y)/2
Prince y x z

I then created three equations, since the difference in their age will always be the same.

d = the difference in ages

x y = d
2z x = d
x/2 + y/2 z = d

I then created a matrix and solved it using row reduction.

x y z

1 -1 0 d
-1 0 2 d
.5 .5 -1 d

It reduced to:

x y z

1 0 0 4d
0 1 0 3d
0 0 1 5d/2

This means that you can pick any difference you want (an even one presumably because you want integer ages).

Princess age: 4d
Prince age: 3d

Ages that work

Princess:
4
8
16
24
32
40
48
56
64
72
80

Prince:
3
6
12
18
24
30
36
42
48
54
60 Did you answer this riddle correctly?
YES  NO  

Gretchen said that there were 4 girls in the family, three of whom were blond.

This would make the probability that she saw two blonds (3/4) * (2/3), which equals 1/2.

Other numbers would work, but the next pair would lead to a rather large family. Did you answer this riddle correctly?
YES  NO  

David: 6
Lauren: 3
David is 3 years older than Lauren.
So when David is 100 Lauren is 97.

Answer: 97 Did you answer this riddle correctly?
YES  NO  

The patch doubles in size every day and so on the 47th day the patch will be half the size it is on the 48th day Did you answer this riddle correctly?
YES  NO  

Ice Did you answer this riddle correctly?
YES  NO  

The number 8. On its side, the number 8 looks like an infinity symbol. Cut in half, the number 8 becomes two zeros. Did you answer this riddle correctly?
YES  NO  

Four brothers and three sisters.

Every boy will have 3 brothers and 3 sisters. Every girl will have 4 brothers and 2 (half of the number of brothers) sisters. Did you answer this riddle correctly?
YES  NO  

The neighbour borrowed an extra cow, to make the total number of cows 18. Then the oldest son got 1/2 of 18 is 9 cows, the middle son got 1/3 of 18 is 6 cows, and the youngest son got 1/9 of 18 is 2 cows. Since 9+6+2 = 17, the cows could be divided among the three brothers in such a way that the borrowed cow was left over, and could be returned to its owner. Did you answer this riddle correctly?
YES  NO  

The book costs $2.

Let the cost be X. We know that:
X = 1 + X/2

Solving for X will give 2. Did you answer this riddle correctly?
YES  NO  

4 daughters (sisters) and 3 sons (brothers)

A girl has as many brothers as sisters : If one of the daughters count her siblings, she would count - 3 sisters (3 remaining daughters in the family) and her 3 brothers (3 Sons in the family). So, it makes the statement true that the girl has as many brothers as sisters.

Each brother has only half as many brothers as sisters. This means, when one of the sons count his siblings, it would be 2 brothers (remaining 2 sons of the family) and 4 sisters (All 4 daughters in the family). 2 is the half of 4. It agrees to the condition that

each brother has only half as many brothers as sisters.

Therefore the answer is :

The family has 4 daughters (sisters) and 3 sons (brothers). Did you answer this riddle correctly?
YES  NO  

One of the 'fathers' is also a grandfather. Therefore the other father is both a son and a father to the grandson.

In other words, the one father is both a son and a father. Did you answer this riddle correctly?
YES  NO  

He has 5 children, all of the daughters have the same 1 brother. Did you answer this riddle correctly?
YES  NO  

The two babies are two of a set of triplets. Did you answer this riddle correctly?
YES  NO  

It was not raining. Did you answer this riddle correctly?
YES  NO  

Pockets. Did you answer this riddle correctly?
YES  NO