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Q.

The rational number −209 247   in standard form is:


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a

− 13 13  

b

− 12 13  

c

− 11 13  

d

− 14 13   

answer is C.

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Detailed Solution

Given a rational number −209 247  .
A rational number is said to be in standard form if the common factor between numerator and denominator is only 1 and the denominator is always positive. Calculating the H.C.F of numerator and denominator,
The prime factors are,
H.C.F = 19
Now, dividing and multiplying by 19
= −209÷19 247÷19 = −11 13  
Standard form is − 11 13  .
Hence, option 3 is correct.
 
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