Kumar writes a letter to four of his friends. He asks each one of them to copy the letter and mail to four different persons with the instruction that they continue the process similarly. Assuming that the process is unaltered and it costs ₹2 to mail one letter, find the amount spent on postage when 8th set of letters is mailed.
This is a famous sum..But i don't want the solution..The problem is,to find the cost of 8th set of letters,which means to find t8..But most of the internet answers are S8 (which is total cost of first 8 set of letters)..So,there is a difference in both the words "8th set of letter" and "total of first 8 set of letters"..But still people use to find S8..Why?
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★ 8th set of letter = पत्र का 8 वां सेट
★ total of first 8 set of letters = पत्रों के
पहले 8 सेट के कुल
➟ There's very big Difference between "8th Set of Letter" and "total of first 8 set of letter" .
➟ 8th Set of Letter Means Individual Letters of Set No. 8 .
➟ Total of First 8 set of letter Means all Letters from Set 1 to 8 .
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