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Byju's Answer

Standard VIII

Mathematics

Properties of Division of Integers

The reciproca...

Question

The reciprocal of $- 1$ is

$1$

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$- 1$

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$0$

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$n o t d e f i n e d$

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Solution

The correct option is B
$- 1$

We know that the reciprocal of a number $a = \frac{1}{a}$
So, the reciprocal of $- 1$ is $\frac{1}{- 1} = - 1$
Hence, the option (B)is the correct option.

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Similar questions

Q. Fill in the blanks:
(i) The product of a rational number and its reciprocal is .......
(ii) Zero has ....... reciprocal.
(iii) The numbers ....... and ....... are their own reciprocals.
(iv) zero is ....... the reciprocal of any number.
(v) The reciprocal of a, where a ≠ 0, is .......
(vi) The reciprocal of

\frac{1}{a}

, where a ≠ 0, is .......
(vii) The reciprocal of a positive rational rational number is .......
(viii) The reciprocal of a negative rational number is .......

Fill in the blanks :

(i) The product of a rational number and its reciprocal is........

(ii) Zero has..... reciprocal.

(iii) The numbers....... and ....... are their own reciprocals.

(iv) Zero is...... the reciprocal of any number.

(v) The reciprocal of a, where $a \neq 0,$ is....

(vi) The reciprocal of $\frac{1}{a}$ , where $a \neq 0$ , is.....

(vii) The reciprocal of a positive rational number is........

(viii) The reciprocal of a negative rational number is..........

Fill in the blanks :

(i)The product of two positive rational numbers is always_______________.
(iii) The product of two negative rational numbers is always_______________.

(iv) The reciprocal of a positive rational number is _______________.

(v) The reciprocal of a negative rational number is _______________.

(vi) Zero has _______________ reciprocal.

(vii) The product of a rational number and its reciprocal is ____________.

(viii) The numbers_______________and_______________are their own reciprocals.

(ix) If a is reciprocal of b, then the reciprocal of b is _______________.

(x) The number 0 is __________________ the reciprocal of any number.

(xi) Reciprocal of $\frac{1}{a}, a \neq$ is __________________.

(xii) $(17 \times 12)^{- 1} = 17^{- 1} \times$ __________________.

Q. Fill in the blanks.
(i) Zero has _________ reciprocal.
(ii) The numbers ___________ and __________ are their own reciprocals.
(iii) The reciprocal of

- 5

is _________.
(iv) Reciprocal of

\frac{1}{x}

, where

x \neq 0

is _________.
(v) The product of two rational numbers is always a ______________.
(vi) The reciprocal of a positive rational number is _______________.

Q. If

a

is reciprocal of

b

, then the reciprocal of

b

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The reciprocal of -1is

The correct option is B -1We know that the reciprocal of a number a=1aSo, the reciprocal of -1is 1-1=-1Hence, the option (B)is the correct option.

The reciprocal of $- 1$ is

The correct option is B
$- 1$

We know that the reciprocal of a number $a = \frac{1}{a}$
So, the reciprocal of $- 1$ is $\frac{1}{- 1} = - 1$
Hence, the option (B)is the correct option.