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Standard VIII

Mathematics

Rational Numbers

If x is any r...

Question

Question 15
If x is any rational number, then x + 0 is equal to
(a) x
(b) 0
(c) – x
(d) Not defined

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Solution

If x is any rational number, then
x + 0 = x [ $∵$ 0 is the additive identity]

Hence, option (a) is correct.

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Question 15
If x is any rational number, then x + 0 is equal to
(a) x
(b) 0
(c) – x
(d) Not defined

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Question 4

For any non-zero rational numbers $x$ and $y$ , $x^{5} \div y^{5}$ is equal to
(a) $(x \div y)^{1}$
(b) $(x \div y)^{0}$
(c) $(x \div y)^{5}$
(d) $(x \div y)^{10}$

Question 14

In the following question, out of the four options, only one is correct. Write the correct answer:

If x be any non-zero integer, then $x^{- 1}$ is equal to:
(a) x
(b) $\frac{1}{x}$
(c) -x
(d) $\frac{- 1}{x}$

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Rational Numbers

Standard VIII Mathematics

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Question 15 If x is any rational number, then x + 0 is equal to (a) x (b) 0 (c) – x (d) Not defined

If x is any rational number, then x + 0 = x [∵ 0 is the additive identity] Hence, option (a) is correct.

Question 15
If x is any rational number, then x + 0 is equal to
(a) x
(b) 0
(c) – x
(d) Not defined

If x is any rational number, then
x + 0 = x [ $∵$ 0 is the additive identity]

Hence, option (a) is correct.