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Find the nth term of an A.P. whose 6th a...

Find the nth term of an A.P. whose 6th and 8th terms are 12 and 22 respectively :

A

7n-30

B

`n^2-24`

C

5n-18

D

none of these

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The correct Answer is:
C
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QUANTUM CAT-SEQUENCE, SERIES & PROGRESSIONS-QUESTION BANK
  1. What is the 10th term of the sequence 2,4 ,……….. ?

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  2. If the 3rd and 7th terms of an AP are 17 and 27 respectively find the ...

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  3. Find the nth term of an A.P. whose 6th and 8th terms are 12 and 22 res...

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  4. If 7 times the 7th term of an A.P. is equal to 11 times its elevent...

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

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  6. If the pth term of an A.P. is q and its qth term is p then its mth ter...

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  7. Find the sum of the AP 13,15,17…..99:

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  8. Find the number of terms in the AP 16,22,28,34,…..616

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  9. Find the sum of 222, 224, 226. ..., 888:

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  10. If the second and seventh terms of an A.P. are 2 and 22 respectively. ...

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  11. The 12th term of an AP is -13 and the sum of its first four terms is 2...

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  12. The third term of an AP is 1/5 and the 5th term is 1/3 find the sum of...

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  13. How many terms of the A.P. 1,4,7,... are needed to give the sum 925 ?

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  14. How many terms of the series 20 + 16 + 12 amounts to 48?

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  15. p,q,r,s,t are first five terms of an A.P. such that P + r + t = -12 an...

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  16. The sum of all the terms of the A.P.7,10,13,... l is 1242. where l is...

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  17. Find the sum of all the integers between 55 and 555 which are divisibl...

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  18. How many terms are there in the A.P. whose first and fifth terms are ...

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  19. The first and last terms of an A.P. are - 7 and 233 and the sum of the...

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  20. The sum of three numbers in AP is 12 and sum of their cubes is 408 fin...

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