যদি ৪২.৪২=K(১৪+m/৫০), যেখানে k এবং m ধনাত্মক পূর্ণসংখ্যা এবং m<50, তাহলে k+m এর মান কত?
A. ৬
B. ১০
C. ৭
D. ৯
সঠিক উত্তরঃ
D.
৯
Explanation:
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