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Fill in the blanks and select the correct option
(i) Product of a positive rational number with a `ul (P)` rational number is always negative
(ii) Multiplicative inverse of `(1)/(3^(-14))` is `ul (Q) `
(iii) The unit digit of the square of the number 1989 is `ul (R)`
(iv) If three acute angles of a quadrilateral measure `80^(@)` each , then the measure of the fourth angle is `ul(S)`

A

`{:(" P Q R S" ),("Positive "3^(-14) " " 3 " " 140^(@)):}`

B

`{:(" P Q R S" ),("Negative "3^(-14) " " 3 " " 150^(@)):}`

C

`{:(" P Q R S" ),("Positive "3^(-14) " " 9 " " 110^(@)):}`

D

`{:(" P Q R S" ),("Negative "3^(-14) " " 1 " " 120^(@)):}`

Text Solution

Verified by Experts

The correct Answer is:
D
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