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Q.

Which of the following rational number is equivalent to the number -1?


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a

− 2 2  

b

−2 −2  

c

3 4  

d

−1 −1   

answer is A.

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Detailed Solution

The given number is -1.
For calculating the equivalent rational number of any rational numbers, multiply the denominator and numerator by the same numbers.
The rational number equivalent to the number -1 can be written as,
−2 2 =−1  
Hence, the number equivalent to -1 is − 2 2  .
Therefore, option 1 is correct.
 
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