allery4 पुरुषों का 15 दिनों का कार्य कितने मानव-दिवसों (man-days) के बराबर है?
A45
B50
C75
D60
Answer & Solution
Correct answer: D. 60
मानव-दिवस = पुरुषों की संख्या × दिन, इसलिए 4 × 15 = 60 मानव-दिवस।
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