Question 1082083
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Use the method of mathematical induction to establish the following 


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1. 1+3+5+...+(2n-1)=2^n                                                   THIS FORMULA IS WRONG

2. 7^(2n+1) is divided by 8                                               THIS STATEMENT IS WRONG

3. 3^(4n+2) + 2.4^(3n+1) is exactly divisible by 7                        THIS STATEMENT IS WRONG (I checked it at n = 1, 2, 3, 4, 5)

4. n^(4) + 4n^(2) + 11 is a multiple of 16 for all odd positive integer n.
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