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# The Weekend Brainteaser

Mr. Mark’s family, consisting of one grandfather, one grandmother, two fathers, two mothers, one father-in-law, one mother-in-law, four children, three grandchildren, one brother, two sisters, two sons, two daughters and one daughter-in-law is going for a holiday.

What is the minimum number of tickets they need to purchase?

• Dr.jacky says:

7 tickets
Description:

Father_________Mother
|
Mark_______________Wife
|
/|\
Boy______Doughter_____Doughter

Father : grandfather + 1 father + father-in-law

Mother : grandmother + 1 mother + mother-in-law

Mark : 1 father + 1 childeren + 1 son

Wife : daughter-in-law + 1 mother

Boy : 1 brother + 1 childeren + 1 son + grandchildren

Doughter : 1 sister + 1 childeren + 1 doughter + grandchildren

Doughter : 1 sister + 1 childeren + 1 doughter + grandchildren

Answer: A minimum of 7 tickets need to be purchased.

Explanation:
Below are the 7 members of Mr. Mark’s family:

1) Mr. Mark’s Father is a Grandfather, Father and Father-in-law
2) Mr. Mark’s Mother is a Grandmother, Mother and Mother-in-law
3) Mr. Mark is a Father and a Son
4) Mr. Mark’s wife is a Mother and Daughter-in-law
5) Mr. Mark’s son is a Son, Brother and Grandchild
6) Mr. Mark’s daughter is a Daughter, Sister and Grandchild
7) Mr. Mark’s second daughter is a Daughter, Sister and Grandchild

@Dr.jacky
Perfect answer. Keep up the good work Jacky.

• Cool i3oY says:

Like this :
1 8 1 4 7 0 7 0 ?

🙂

• Cool i3oY says:

1 8 1 4 7 0 7 0 ?

Why?
Because :

— Level 1 -||- Level 2—
1 -> 8 : +7 || +7 -> -7 : -14
8 -> 1 : -7 || -7 -> +3 : +10
1 -> 4 : +3 || +3 -> +3 : 0
4 -> 7 : +3 || +3 -> -7 : -10
7 -> 0 : -7 || -7 -> +7 : +14
0 -> 7 : +7 || +7 -> -7 : -14
7 -> 0 : -7 || -7 -> y : z
0 -> x : y |||

-14 +10 0 -10 +14 -14 z
By following this trail, take the result that
z = +10
y = (-7) + z = +3
x = 0 + y = +3