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Question


Find the least fraction, which must be multiplied to (124 12 +3616 116 +28) to make it an integer.


Options:
A .   241
B .   161
C .   731
D .   173
Answer: Option B
:
B


(124 -12 +3616 -116 +28)



=64 12 +5416 116 +28



Taking LCM of denominators and solving,



24 8 +54 1 +416=7316



Now, If we multiply 7316 by 161, it becomes 73, which is an integer
 


Hence, 161 is the required fraction.



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