Question

Find the incorrect option (Assume conventional notations).

(a) Q = p/q where p and q are integers and q=0

(b) N = {1, 2, 3…}

(c) W = {0, 1, 2, 3…}

(d) Z = {…-2, -1, 0, 1, 2…}

The question was asked in examination.

This interesting question is from Number Systems Basics topic in section Number Systems of Mathematics – Class 9

Answer 1

Right answer is (a) Q = p/q where p and q are integers and q=0

The best explanation: Q = p/q where p and q are integers and q = 0 is an incorrect option. In the option, q=0 is given which is incorrect it should be q ≠ 0. All other options are correct since N set includes all positive integers, W set includes all integers and zero and Z set includes zero and all positive and negative integers.