Official Guide Explanation:
Problem Solving #73




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Solution and Metadata

Question: 73
Page: 162
Difficulty: 5 (Moderate)
Category 1: Arithmetic > Decimals >
Category 2: Arithmetic > Powers and Roots of Numbers > Powers
Category 3: Arithmetic > Powers and Roots of Numbers > Roots

Explanation: This question isn't testing anything specific to the decimal 0.345. The issues are the properties of squares and square roots of numbers between 0 and 1. In short, when you square such a number, it gets smaller. (For instance, (0.5)2 = 0.25.) When you take the square root, it gets bigger. ( rt[(1/9)] = (1/3)) Thus, t is the largest, followed by r, and s is the smallest. Choice (D) reflects that.

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