Answer to Question #251674 in Discrete Mathematics for Matheca

Question #251674

(1) Use inductive reasoning to predict the next number in each list.

(a) 1, 4, 9, 16, 25, 36, 49, ?

(b) 2, 7, −3, 2, −8, −3, −13, −8, −18, ?

(c) 1/2, 2/3, 3/4, 4/5, 5/6, 6/7, ?


1
Expert's answer
2021-10-17T16:49:40-0400

(1) Let us use inductive reasoning to predict the next number in each list.


(a) It follows that the sequence is defined as xn=n2,x_n=n^2, and hence the next number is 82=64.8^2=64.


(b) It follows that x2n=5+x2n1x_{2n}=5+x_{2n-1} and x2n+1=x2n10,x_{2n+1}=x_{2n}-10, and hence the next number is 13.-13.


(c) It follows that the sequence is defined as xn=nn+1,x_n=\frac{n}{n+1}, and hence the next number is 78.\frac{7}{8}.

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