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A person writes a letter to four of his ...

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.

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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.

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.

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.

A N EXCEL PUBLICATION-SEQUENCES AND SERIES-QUESTION BANK
  1. If (a+bx)/(a-bx)=(b+cx)/(b-cx)=(c+dx)/(c-dx)(xne0) then show that a,b,...

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  2. Let S be the sum P the product and R the sum of reciprocals of n terms...

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  3. The p^(th),q^(th)and r^(th) terms of an A.P. are a,b,c respectively. S...

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  4. If a (1/b+1/c),b(1/c+1/a),c(1/a+1/b) are in A.P. prove that a,b,c are ...

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  5. If a,b,c,d are in G.P. prove that (a^n+b^n),(b^n+c^n),(c^n+d^n) are in...

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  6. If a and b are the roots of x^2-3x+p=0 and c,d are the roots of x^2-12...

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  7. If a,b,c are in A.P. b,c,d are in G.P. and 1/c,1/d,1/e are in A.P. pro...

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  8. Find sum of 5 + 55 + 555 + ... to n terms.

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  9. Find the sum of the following series upto n terms 0.6+0.66+0.666+…

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  10. Find the 20^(th) term of the series 2xx4+4xx6+6xx8+… to n terms

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  11. Find the sum of the 1^(st) n terms of the series 3+7+13+21+31+…

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  12. If S1.S2.S3 are the sum of the first n natural numbers, their squares ...

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  13. Find the sum of the following series upto n terms (1^3)/1+(1^3+2^3)/(1...

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  14. Show that (1 xx 2^2+2 xx 3^2+. .+n xx(n+1)^2)/(1^2 xx 2+2^2 xx 3+. .+n...

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  15. A farmer buys a used tractor for Rs. 12,000. He pays Rs. 6000 cash and...

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  16. Shamshad Ali buys a Scooter for Rs. 22000. He pays Rs. 4000 cash and a...

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  17. A person writes a letter to four of his friends. He asks each one of t...

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  18. A man deposited Rs. 10000 in a bank at the rate of 5% simple interest ...

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  19. A manufacturer reckons that the value of a machine, which costs him Rs...

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  20. 150 workers were engaged to finish a job in a certain number of days. ...

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