Question

Which list shows the first five multiples of \[2\]?
\[\begin{align}
  & a)2,3,4,5,6 \\
 & b)2,4,6,8,10 \\
 & c)2,20,200,2000,20000 \\
 & d)2,22,222,2222,22222 \\
\end{align}\]

Answer 1

Hint: In order to find the first five multiples of a number. We start by multiplying that number by \[1\] and then we multiply it by \[2,3\], and so on till the number 5 as we need to find the first five multiples. Otherwise we multiply till the number as asked.

Formula used:
The formula used is simple multiplication of the first five natural numbers with \[2\]which gives us the first five multiples of \[2\].

Complete step by step answer:
For the first five multiples of 2, we start by multiplying it with 1 and so on till 5
\[\begin{align}
  & 2\times 1=2 \\
 & 2\times 2=4 \\
 & 2\times 3=6 \\
 & 2\times 4=8 \\
 & 2\times 5=10 \\
\end{align}\]
Thus, out of the four options, let us check which option seems right.
As in option a) the multiples given are \[2,3,4,5,6\] which as we can see are not the multiples but the natural numbers in series.
As in option b) the multiples given are \[2,4,6,8,10\] which as we can see in the solution are exactly the multiples of \[2\].So, the correct option is b)
As in option c) the multiples given are \[2,20,200,2000,20000\] . All these are multiples of \[2\] but not the first five multiples of \[2\].
Now as in option d) the multiples given are \[2,22,222,2222,22222\]. Again, all these are multiples of \[2\] but not the first five.

So, the correct answer is Option B.

Note: The options are to be viewed very carefully in this question as except for the option a), all are given with the multiples of \[2\] but the fact to be noticed is that we need to find only the first five multiples.