## Cheryls Birthday Problem: Systematic Solution to the Math Puzzle

Cheryl's Birthday Problem: Cheryl gives Albert and Bernard 10 possible dates for her birthday and also a few clues. And you have to find Cheryl's birthday.

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Competitive test topic Reasoning and logic analysis is for testing problem solving skill in using precise logic as well as pattern identification.

Apart from Maths and English, problem solving skill is tested in modern day leading competitive tests through a relatively new topic Reasoning. Though in daily life use, reasoning involves use of result bearing common sense also, in a formal academic test environment usually there is no place for subjectivity. Thus a number of different types of problems each with precise answers have been designed for testing the pattern recognition skill, analytical skill and logic analysis skill of the student, and are clubbed under the topic Reasoning.

Typically Reasoning includes problems of types, Analogy, Coding-decoding, Family relations, Logic puzzles or even English word, sentence and paragraph analysis.

**We will start this new branch with how to solve the relatively more difficult and confusing logic puzzles efficiently** in quick time by applying the powerful collapsed column logic analysis technique and then will go on to explore other types of Reasoning problems that require efficient problem solving.

In general stress will be on logic analysis.

All the posts starting with "How to solve..." belong to the top level category of **Tutorial**. The rest are gathered from other categories of posts because the content of such a post is predominantly rich in Reasoning or Logic analysis. The tutorials are more academic with more detailed explanations.

An example of such other-than-Tutorial category posts is, * SBI PO type high level floor stay reasoning puzzle solved few confident steps 1* under subcategory

A second example of such other-than-Tutorial category posts is, * Method based solution of Einstein's logic analysis puzzle whose fish* under subcategory

**This series of posts starts with** *first presentation of the Collapsed column logic analysis technique* in * How to solve difficult SBI PO level reasoning puzzles in a few simple steps 1*.

The posts appear in **latest first time sequence.**

Submitted by Atanu Chaudhuri on Mon, 22/07/2019 - 19:11

Submitted by Atanu Chaudhuri on Wed, 17/10/2018 - 03:21

In this improved solution to Einstein's puzzle, learn how to find the answer to Einstein riddle who owns the fish confidently and systematically.

Submitted by Atanu Chaudhuri on Tue, 25/09/2018 - 03:01

In this fourth session on reasoning puzzles for Bank PO exams, the puzzle chosen is a floor stay puzzle that has fairly large number of conditions as well as is a three variable reasoning puzzle that is not easy. Majority of the basic and advanced patterns and methods for reasoning puzzle solving needed to be used for quick solution of this well-formed tricky problem...

Submitted by Atanu Chaudhuri on Tue, 26/06/2018 - 17:33

Using suitable logic table representation, solution to the floor based puzzle for Bank PO explains in clear steps how to solve a basic floor based puzzle.

Submitted by Atanu Chaudhuri on Mon, 25/06/2018 - 16:09

In this 11th session on solving reasoning puzzles of SBI PO type, the puzzle chosen is a floor stay reasoning puzzle of high level. To solve this relatively hard puzzle, analysis of the problem, precise selection of the right conditional statement sequence to execute and involved multi-variable elementary logic analysis are required. Overall, this is a good puzzle to solve because of its considerable amount of learning potential...

Submitted by Atanu Chaudhuri on Sun, 17/06/2018 - 17:58

How to solve box puzzle reasoning 9 for SBI PO level explained step by step using logic table representing box name, position, content cake and material.

Submitted by Atanu Chaudhuri on Thu, 14/06/2018 - 14:08

In this second session on reasoning puzzles for Bank PO exams, the puzzle chosen is a four variable assignment puzzle at basic level...

Submitted by Atanu Chaudhuri on Sat, 09/06/2018 - 18:41

The tough 9 person circular seating reasoning puzzle for SBI PO solved quickly in easy steps by primary barrier identification and effective logic analysis.

Submitted by Atanu Chaudhuri on Mon, 04/06/2018 - 05:43

Adapting logic analysis strategies and logic table representation to solve a circular seating arrangement reasoning puzzle for SBI PO quickly in easy steps.

Submitted by Atanu Chaudhuri on Thu, 11/05/2017 - 10:22

In this first session on reasoning puzzles for Bank PO exams, the puzzle chosen is a two row, two object set assignment puzzle, with the complexity of ranking the persons by height as well as placing them against the eight positions in two rows...