Arun writes letter to 3 of his friends He asks each of them to copy the letter and mail to 3 different persons with the request that they continue the chain similarly . Assuming that the chain is not broken .Find the number of letters in the 8th set.

Arun writes letter to 3 of his friends He asks each of them to copy the letter and mail to 3 different persons with the request that they continue the chain similarly . Assuming that the chain is not broken. Form the sequence of the number of letters mailed in different sets.

Arun writes letter to 3 to his friends He asks each of them to copy the letter and mail to 3 different persons with the request that they continue the chain similarly . Assuming that the chain is not broken and that it costs re.1 to mail one letter. Find the number of letters in the 2nd and 3rd set

Arun writes letter to 3 to his friends He asks each of them to copy the letter and mail to 3 different persons with the request that they continue the chain similarly . Assuming that the chain is not broken and that it costs re.1 to mail one letter. Find the cost if all the letters in the 8 sets are considered.

A person writes a letter to four of his friends. He asks each one of them to copy the letter 'and mail to four different persóns with instruction that they move the chain similarly. Assuming that the chain is not broken and that it costs 50 paise to mail one letter. Find the amount spent on the postage when 8^ th set of letter is mailed.

A person 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 instruction that they move the chain similarly. Assuming that the chain is not broken and that it costs 50 paise to mail one letter. Find the amount spent on the postage when the 8 set of letteris is mailed.

Shyam bought 5 two hundred page notebooks and 3 hundred page notebooks from the school store. The price. of a two hundred page book is 9 rupees and the price of a hundred page book is 4 rupees. How much did Shyam spent? Use any letters you like for the number of two hundred page note books bought from this store, the number of hundred page books bought and the total amount of money spent by a student, and write the relation connecting them.