Question

The set O of odd positive integers less than 10 can be expressed by _____________

(a) {1, 2, 3}

(b) {1, 3, 5, 7, 9}

(c) {1, 2, 5, 9}

(d) {1, 5, 7, 9, 11}

This question was posed to me by my college director while I was bunking the class.

Asked question is from Sets in section Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

Answer 1

The correct option is (b) {1, 3, 5, 7, 9}

Explanation: Odd numbers less than 10 is {1, 3, 5, 7, 9}.