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કયો પૂર્ણાંક ખાલી જગ્યા ભરે છે: ___ + (−18) = −31?

A49
B13
C−49
D−13
Answer & Solution
Correct answer: D. −13
−31 માં 18 ઉમેરવાથી ગુમ થયેલ પૂર્ણાંક −13 મળે છે.
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