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आठ श्रमिक एक कार्य पर प्रत्येक 9 घंटे लगाते हैं। कुल खर्च किए गए मानव-घंटे (man-hours) कितने हैं?

A64
B17
C72
D81
Answer & Solution
Correct answer: C. 72
मानव-घंटे = श्रमिकों की संख्या × घंटे, इसलिए 8 × 9 = 72 मानव-घंटे।
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