Which of the following statements is INCORRECT?
Zero has a reciprocal
The product of two negative rational numbers is always positive
The reciprocal of a positive rational number is always positive
The product of two positive rational numbers is always positive

The product of two positive rational numbers is always positive

The product of two negative rational numbers is always positive

The reciprocal of a positive rational number is always positive

Zero has a reciprocal

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Solution

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The correct option is A Zero has a reciprocal
Zero can't have a reciprocal because
$1 / 0$ is not defined.
The rest statements are
$(- a) \times (- b) = a b$
Reciprocal of $a$ is $1 / a$
$a \times b = a b$
where $a$ and $b$ are positive.
Rest all statements are true except for option A.

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Fill in the blanks :
(i) The product of two positive rational numbers is always___
(ii) The product of two negative rational numbers is always___
(iii) If two rational numbers have opposite signs then their product is always___
(iv) The reciprocal of a positive rational number is ___ and the reciprocal of a negative rational number is___
(v) Rational number 0 has___ reciprocal.
(vi) The product of a rational number and its reciprocal is ___
(vii) The numbers ___and ___are their own reciprocals.
(viii) If M is reciprocal on N,then the reciprocal of N is___

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Fill in the blanks:
(i) The product of two positive rational numbers is always .....
(ii) The product of a positive rational number and a negative rational number 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.
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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 _______________.

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Product of two positive rational numbers is always positive.

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

- 5

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(iv) Reciprocal of

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x \neq 0

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

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Which of the following statements is INCORRECT?Zero has a reciprocalThe product of two negative rational numbers is always positiveThe reciprocal of a positive rational number is always positiveThe product of two positive rational numbers is always positive

The correct option is A Zero has a reciprocalZero can't have a reciprocal because1/0 is not defined.The rest statements are(−a)×(−b)=ab Reciprocal of a is 1/aa×b=abwhere a and b are positive.Rest all statements are true except for option A.

Which of the following statements is INCORRECT?
Zero has a reciprocal
The product of two negative rational numbers is always positive
The reciprocal of a positive rational number is always positive
The product of two positive rational numbers is always positive

The correct option is A Zero has a reciprocal
Zero can't have a reciprocal because
$1 / 0$ is not defined.
The rest statements are
$(- a) \times (- b) = a b$
Reciprocal of $a$ is $1 / a$
$a \times b = a b$
where $a$ and $b$ are positive.
Rest all statements are true except for option A.