alleryप्राप्तांक 60 (भार 3) और 80 (भार 2) का भारित माध्य कितना होगा?
A70
B68
C72
D66
Answer & Solution
Correct answer: B. 68
भारित कुल योग 180 + 160 = 340 है, और 340 को 5 से विभाजित करने पर 68 प्राप्त होता है।
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