Please help me with this question.

Dear student,
The numbers in the fourth rectangle are the sum of the numbers present in the same place of the other three rectangles.
6+3+3=12
4+1+12=17
3+9+4=16
Therefore, The missing number is = 6+2+7 =15
Regards

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49
 
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Any one please send friend request
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Hai which school are you
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hi my name is Sanch and the answer is 18

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Can u please explain how
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it is 18
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But how did u all get 18???
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