Q.

What number should be subtracted from 3 4  to get 1  ?


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a

6 4  

b

7 4  

c

6 4  

d

7 3   

answer is B.

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Detailed Solution

Here, we have to find a number that is subtracted from 3 4  , so that we get the result 1.
Assume the number that is to be subtracted as x.
3 4 x=1 x= 1 1 3 4  
L.C.M of the number 4 and 1=4  .
x= 4+3 4 x= 7 4 x= 7 4  
Hence, the number to be subtracted from 3 4  to get 1   is 7 4   .
Therefore, option 2 is correct.
 
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