allery54 किलो का बैग हटाने से माध्य 40 से घटकर 38 किलो हो जाता है। मूल बैग गिनती?
A7
B6
C9
D8
Answer & Solution
Correct answer: D. 8
यदि n बैग होते, 40n − 54 = 38(n − 1), जो n = 8 देता है।
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