allery54 kg بیگ کو ہٹانے سے اوسط 40 سے 38 kg تک کم ہو جاتا ہے۔ اصل بیگ شمار؟
A7
B6
C9
D8
Answer & Solution
Correct answer: D. 8
اگر n تھیلے ہوتے، 40n − 54 = 38(n − 1)، جو n = 8 دیتا ہے۔
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