Consider the following one-to-one correspondence between the set B of all odd integers and the set N of all natural numbers:   where an even natural number n corresponds to the negative odd integer 1 − n and an odd natural number n corresponds to the odd integer n.   (a) Find the 349th odd integer; that is, find the element of B that corresponds to 349  N. (b) Find the element of N that corresponds to 243  B. (c) Find the element of N that corresponds to −757  B.

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