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A meeting hall has 30 rows in all. There...

A meeting hall has 30 rows in all. There are 20 seats in the first row, 24 seats in the second row and 28 seats in the third row and so on. How many seats are there in the hall? a)`136` b)`4640` c)`2340` d)`192`

A

136

B

4640

C

2340

D

192

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CHETANA PUBLICATION-Arithmetic Progression-EXERCISE
  1. In an A.P, a=8, tn=62, Sn=210, then find n. a)5 b)6 c)7 d)8

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  2. The sum of first n terms of an A.P. is Sn=………… a)n/2[t1+tn] b)n/2[2+(n...

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  3. A meeting hall has 30 rows in all. There are 20 seats in the first row...

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  4. State whether the given sequence is an A.P or not : 1^3,2^3,3^3,4^3,5^...

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  5. Is the following sequence Arithmetic Progression? If it is an A.P then...

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  6. Is the following sequence an Arithmetic progression? If it is an A.P t...

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  7. Is following sequence an Arithmetic progression? If it is an A.P then ...

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  8. Is the following sequence an Arithmetic progression? If it is an A.P t...

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  9. Is the following sequence is an Arithmetic progression? If it is an A....

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  10. Write an A.P where the common difference d and the first term a are: a...

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  11. Write an A.P where the common difference d and the first term a are a=...

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  12. Write an A.P where the common difference d and the first term a is giv...

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  13. Write an A.P where the common difference d and the first term a is giv...

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  14. Write an A.P where the common difference d and the first term a is giv...

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  15. How many terms are there in the A.P 187,194,201,…..,439 ?

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  16. Find n, if the nth term of the following sequence is 68: 5,8,11,14,….

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  17. If the 10th term and the 18th term of an A.P are 25 and 41 respectivel...

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  18. How many three digit natural numbers are divisible by 4?

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  19. Find the 18th term of the A.P 1,7,13,19.

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  20. Find t11 for the following A.P: 4,9,14,….

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