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Logic28 for iOS

By SS Chen Free

Developer's Description

Logical Analysis can help us understand more about what happens around us. Logical Analysis can also help us master Math and Science. Logic28 is a game to practice Logical Analysis.In each round, the player is given four positive integers less than 10. The goal is to use these 4 numbers to make an expression equal to 28. To do this, we can follow 3 basic steps. For example, consider the numbers 1, 2, 3, and 4.Step 1: Determine the correct order of these four integers. 1, 2, 3, and 4 is the correct sequence.Step 2: Insert one of four operators: +, -, *, and /, between each pair of integers in the sequence. For this example, we will insert +, *, and * to obtain 1 + 2 * 3 * 4.Step 3: Determine the proper order of operations. Without any parentheses, 1 + 2 * 3 * 4 equals 25. To make the expression equal 28, we need to insert a pair of parentheses as follows: (1 + 2 * 3) * 4, so that the addition will be carried out before the second multiplication.Let's try a second example using 1, 2, 7, and 9.Step 1: Arrange the sequence as 9, 1, 2, and 7.Step 2: Insert -, /, and * to obtain 9 - 1 / 2 * 7.Step 3: Insert one pair of parentheses to obtain (9 - 1) / 2 * 7, which is equal to 28.The complete list of all possible four-integer expressions that equal 28 is available on our web site.

Full Specifications

What's new in version 2.6

Implemented Leaderboards for the Game Center.


Release July 26, 2015
Date Added July 26, 2015
Version 2.6

Operating Systems

Operating Systems iOS
Additional Requirements Compatible with iPhone 3Gs, iPhone 4. iTunes account required.


Total Downloads 0
Downloads Last Week 0
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