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In an auditorium , if there are 20 seats...

In an auditorium , if there are `20` seats in `1^(st)` row, `25` in `2^(nd)` row then there are ……………. Seats in 10^(th)` row.

A

`65`

B

`45`

C

`55`

D

`75`

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UNIQUE PUBLICATION-ARITHMETIC PROGRESSION-Unique Practice Session
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  2. Find first four terms of an A.P., whose first term is -6 and common di...

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  3. In an auditorium , if there are 20 seats in 1^(st) row, 25 in 2^(nd) r...

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  4. What is the sum of the first 10 even numbers starting with 0.

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  5. What is the sum of first 10 natural numbers.

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  7. Smith asked daddy to give Rs100 on first day and go on decreasing by R...

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  8. -10,+10,-10,+10,……………Is the sequence an A.P. ? If so, find the common ...

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  9. -4,-3,-2,………….Is the sequence an A.P. ? If so find the common differen...

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  10. Find a and d of an A.P. 5,12,19,26.

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  11. Find a and d of an A.P. 2, -2, -6,-10,………

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  12. 108,108,108,………. is an A.P.find a & d.

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  13. Find the n^(th) term of an A.P. given a=5 & d=-2.

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  14. Find the n^(th) term of an A.P. given a=-3 and d=4.

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  15. Find the n^(th) term of an A.P. Whose first term is 200 and common dif...

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  16. If first term is -1 and common difference is (-1)/(2) find the n^(th) ...

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  17. If a=3sqrt(3) and d=4sqrt(3) for an A.P. find t(n).

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  18. Find the next term of an A.P. -3,1,5,9,…..

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  19. Given t(n)=4n-12 find t(10)

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  20. Write the correct number in the given boxes from the following A.P. 2,...

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