Verified by Ajay Kumar
The average of 20 numbers is 45. If each number is decreased by 7, what will be the new average?
38
40
36
34
Answer: A
Solution
When the same value is subtracted from every observation, the average decreases by that value. New average=45-7=38.
20 संख्याओं का औसत 45 है। यदि प्रत्येक संख्या में से 7 घटा दिया जाए, तो नया औसत क्या होगा?
38
40
36
34
उत्तर: A
हल
जब प्रत्येक संख्या में से समान मान घटाया जाता है, तो औसत भी उतना ही घटता है। नया औसत=45-7=38।
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