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Question

Find the sum:
328+121



Your Answer
A

1784

Correct Answer
B

1384

Your Answer
C

1184

Your Answer
D

1584


Solution

The correct option is C

1384


To find the value of 328+121, first we have to find the LCM of 28 and 21.
 228,21214,2137,2177,71,1
LCM of 28 and 21  =2×2×3×7=84
                                    
328+121 =3×328×3+1×421×4=9+484=1384

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