# Chapter 1 - Problem Solving and Critical Thinking - 1.1 Inductive and Deductive Reasoning - Exercise Set 1.1: 47

Conjecture is correct.

#### Work Step by Step

1+2+3+4+5+6 = $\frac{6 *7}{2}$ L.H.S = 1+2+3+4+5+6 = 21 R.H.S= $\frac{6 *7}{2}$ = $\frac{42}{2}$ = 21

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