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Q.

Subtract the following with the help of the number line :

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a

2

b

1

c

5

d

3

answer is D.

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Detailed Solution

Concept- First, find 4 on the number line. Then subtract 1 or add (-1) to 4. Move 1 unit of 4 to the left. Whatever value you get, it will be the answer you want.
Here we need to draw

using the number line. Addition and subtraction on the number line is a great way to see how numbers are added and subtracted in a visual interpretation. To add a positive number to the number line, you need to move the dot to the right of the number line. Similarly, adding a negative number means moving a point on the number line to the left.
Question Image

Question Image

Let's take a look at our question. Here we need to use the number line to find the value

. We know that subtraction only adds negative numbers. Therefore, we can write

. Therefore, we need to find

using the number line. First, find the first number, which is 4 on the number line.

Then add a negative value (-1) to instruct it to move from 4 to 1 unit to the left. This makes it look like this:
Question Image

Question Image

If you go from 4 to 1 unit to the left, you will get 3. Therefore,

Hence, the correct answer is option (4)

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