Question

1. which numbers are not multiples of 6? write all the numbers that are not multiples of 6.

1 2 6
18 26 36
not multiples of 6
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Explanation:

Step1: Recall multiple definition

A multiple of 6 is \( n = 6k \), \( k\in\mathbb{Z} \). Check each number:

• \( 1 \): \( 1\div6=\frac{1}{6}

otin\mathbb{Z} \), not a multiple.

• \( 2 \): \( 2\div6=\frac{1}{3}

otin\mathbb{Z} \), not a multiple.

• \( 6 \): \( 6\div6 = 1\in\mathbb{Z} \), is a multiple.
• \( 18 \): \( 18\div6 = 3\in\mathbb{Z} \), is a multiple.
• \( 26 \): \( 26\div6=\frac{13}{3}

otin\mathbb{Z} \), not a multiple.

• \( 36 \): \( 36\div6 = 6\in\mathbb{Z} \), is a multiple.

Step2: Identify non - multiples

From the check, numbers not multiples of 6 are 1, 2, 26.

Answer:

1, 2, 26