Which number is represented by a variable $A,$ in the following number line?

- 20

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0

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20

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None of these

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Solution

The correct option is B $20$
On the given number line, it is clear that the value of each number decreases by $1$ as we move from right to left.
Between $- 19$ and $- 21$ there lies $- 20$ as per the given number line.
$∴ - A = - 20$
$∴ A = 20$

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Which number is represented by a variable A, in the following number line?

The correct option is B 20On the given number line, it is clear that the value of each number decreases by 1 as we move from right to left.Between −19 and −21 there lies −20 as per the given number line.∴−A=−20∴A=20

Which number is represented by a variable $A,$ in the following number line?

The correct option is B $20$
On the given number line, it is clear that the value of each number decreases by $1$ as we move from right to left.
Between $- 19$ and $- 21$ there lies $- 20$ as per the given number line.
$∴ - A = - 20$
$∴ A = 20$