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(a) Find the 10th term of the progressio...

(a) Find the 10th term of the progression 1 + 3 + 5 +7+ ...
(b) Find the 7th term of the progression 80 + 77 +74+ …
(c) Find the 22nd term of the progression `7(3)/(4)+9(1)/(2)+11(1)/(4)+...`
(d) Find the nth term of the progression - 5 - 3 - 1 + 1 +...

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The correct Answer is:
(i)19 (ii)62 (iii)`44(1)/(2)` (iv) (2n-7)
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NAGEEN PRAKASHAN-ARITHMETIC PROGRESSION-Exercise 5b
  1. For the following A.P.'s , write the first term and common difference ...

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  2. Write first four terms of the A.P., when the first term 'a' and the co...

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  3. (a) Find the 10th term of the progression 1 + 3 + 5 +7+ ... (b) Fin...

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  4. (i) Which term of the A.P. 4, 8, 12, ...... Is 76? (ii) Which term o...

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  5. (i) Find the number of terms in the A.P. 8, 12, 16, ........124 (i...

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  6. (i) How many number of two digits are divisible by 3 ? (ii) How many...

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  7. (i)Which term of the A.P. 4, 3(5)/(7), 3(3)/(7), ..... is the first ne...

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  8. The 18th term of an A.P. exceeds its 12th term by 24. Find the common ...

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  9. Is 313, a term of the A.P. 5, 10, 15, ..... ?

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  10. (i) The 3rd and 19th terms of an A.P. are 13 and 17 respectively. Find...

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  11. (i) 6 times the 6th term of an A.P. is equal to 10 times the 10th term...

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  12. If (m+1)^(t h) term of an A.P. is twice the (n+1)^(t h) term, prove th...

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  13. Which term of the arithmetic progression 5,\ 15 ,\ 25 ,\ dot will b...

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  14. Find the value of k if k+1, 2k+1 and k+7 are in A.P.. Also find the ne...

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  15. Determine k, so that K^(2)+4k+8, 2k^(2)+3k+6 and 3k^(2)+4k+4 are three...

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  16. If pth,qth and rth terms of an A.P. are a, b, c respectively, then sho...

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  17. The sequence p(1), p(2), p(3), ... satisfies the relation 2p(n)=p(n-1)...

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  18. (i) The nth term of a progression is 2n+1. Prove that it is an A. P. ...

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  19. (i) Find the 10th term from the end of the A.P. 82, 79, 76, .... , 4...

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  20. In a flower bed, there are 51 plants in the first row, 48 plants in th...

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