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कौन सा पूर्णांक रिक्त स्थान को भरता है: ___ + (−18) = −31?

A49
B13
C−49
D−13
Answer & Solution
Correct answer: D. −13
18 को −31 में जोड़ने पर लुप्त पूर्णांक −13 प्राप्त होता है।
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