9. (A challenging problem) For each formula, give both a proof using the Principle of Mathematical Induction and a combinatorial proof. One of the two will be easier while the other will be more challenging. b. (1) ²° + (7¹) ²¹ + (2) ²² ++ (1) ²² = 3² 20 2n

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Please answer this with induction.

9. (A challenging problem) For each formula, give both a proof using the
Principle of Mathematical Induction and a combinatorial proof. One of the two
will be easier while the other will be more challenging.
n
b.
bị +..+(m)="
(1) 2º + (7) ²¹ + (2) ²²
2²+
² 2n = 3n
n
Transcribed Image Text:9. (A challenging problem) For each formula, give both a proof using the Principle of Mathematical Induction and a combinatorial proof. One of the two will be easier while the other will be more challenging. n b. bị +..+(m)=" (1) 2º + (7) ²¹ + (2) ²² 2²+ ² 2n = 3n n
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