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Reported Question / Answer
Q.) The formula for efficiency is
1)
(energy input / energy output) x 100
2)
(energy input / energy output) x 100
3)
(useful energy output / total energy input) x 100
4)
(useful energy input / energy output) x 100
5)
NULL
Answer :
3
Thank you for reporting wrong Question / Answer / Options
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Message / Correct Answer / Suggestion
Human Verification : Answer 2 + 3 = ?
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