A logic problem by Kylie Landson

Logic Level 1

Addy, Mike, Turner, and Mally are siblings. Order the children from the oldest to the youngest.

  • Addy is 7 years older than Mally.
  • Turner is 5 years younger than Mike.
  • Mike and Addy are not twins.
  • Mike is 7 years older than Mally.
  • Addy was born in the spring.
  • Mike was born before Christmas but after July.
  • Mally was born last.
Mike, Turner, Addy, Mally Mally, Turner, Addy, Mike Addy, Mike, Turner, Mally

Kylie Landson by Kylie Landson , 22, USA

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3 solutions

宥 神
Aug 17, 2015

From 1st and 4th statements, Addy and Mike are same age.

From 3rd , 5th and 6th statements, Addy is older than Mike .

From 7th statement, Mally is the youngest.

From 2nd statement, Turner is older than Mally but younger than Addy and Mike .

So the answer is Addy , Mike , Turner , Mally .

4 Helpful 0 Interesting 0 Brilliant 0 Confused

I do not agree. The order i found is not in the list.

Addy and Mike are both born 7 years after Mike, but if Ally was born in spring, and Mike in December (between 21st and 24th according to 3rd and 6th, if considered 9 months pregnancy, but what a biological challenge...).

We should have Mike > Addy > Turner > Mally.

Excepted if "7 years after" means "between 7years and 0 month, and 7 years and 11 months after, independently of civil first day of the year".

Leonblum Iznotded - 2 years, 10 months ago
Lucas Moreno
Mar 20, 2021

We can find the solution with only the three last clues since it gives us a proper order: Addy-Mike-Mally.

The only answer with this order is Addy-Mike-Turner-Mally.

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Caillen Tu
Jun 18, 2020

I found out by seeing that they say addy is 7 years younger than mally.

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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