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ஐந்து எண்களின் கூட்டுச் சராசரி 18. அவற்றின் கூடுதல் என்ன?

A95
B85
C80
D90
Answer & Solution
Correct answer: D. 90
கூடுதல் என்பது சராசரியை எண்ணிக்கையால் பெருக்குவதற்குச் சமம், எனவே 18 x 5 = 90.
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