The average of 5 numbers is 40. If 2 more numbers, with an average of 21, are added to these numbers, what will be the average of the combined 7 numbers?
Explanation: প্রথম 5 number এর total = \(5 \times 40 = 200\)\nবাকী 2 number এর total = \(2 \times 21 = 42\)\n\(\therefore\) মোট 7 number এর average = \(\frac{200+42}{7} = \frac{242}{7} \approx 34.57\)\nকিন্ত এখানে approximate answer বের করতে বলা হয়নি। তাই answer হবে E।
