Question

Write the following in roster form and determine its cardinality A={x:x is a multiple of 6 less than 18} *

A=(1,6,12,18); n(A)=4

A=(6,12); n(A)=2 (this is the correct answer but I need working of it to show how I got the answer, I really need help with it, please upload the working fast, I'll follow and mark brainly)

A=(6,12,18);n(A)=3​

Answer 1

Answer:

A=(6,12)

n(A) = 2

Step by step explanation:

To find the multiple of 6 which is less than 18,

first we should find the products of 6th table

which is 6×1=6 ----- multiple

6×2=12 ---- multiple

The next step is to find the products(multiple)

less than 18

Now 6 and 12 are the multiples which is less than 18.

Hence the answer is A=(6,12)