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In a flower garden there are 23 plants i...

In a flower garden there are 23 plants in first row, 21 plants in second row, 19 plants in 3rd row and so on. If there are 10 rows in that garden, then find the total number of plants in the last row with the help of the formula `t_(n) = a+(n-1)d`

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VGS PUBLICATION-BRILLIANT-PROGRESSIONS-EXERCISE
  1. In the AP -9 , -14, -19, -24, ……… a(30) - a(20) = ………….

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  2. Find the 11^th term of the A.P. : 15, 12, 9, .....

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  3. In a flower garden there are 23 plants in first row, 21 plants in seco...

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  4. If seven times of 7th term of an Arithmetic Progression is euqal to th...

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  5. Measures of sides of a triangle are in Arithmetic Progression. Its per...

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  6. Explain the terms in the formula. S(n) = n/2 [2a+(n-1)d].

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  7. Find the sum of first 10 terms of an A.P. 3, 15, 27, 39,…..

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  8. Find the value of 'k' , so that k+2, 4k-6 and 3k-2 are the three conse...

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  9. Find the 7^(th) term from the end of the Arithmetic Progression. 7, ...

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  10. Write the formula of n^(th) term of G.P. and explain the terms in it.

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  11. In a rangoli design of 13 rows, every row increases its previous row b...

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  12. Which term of the G.P. : sqrt2, 2, 2sqrt2, 4, ....... is 32 ?

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  13. A manufacture of TV sets produced 500 sets in the third year and 700 s...

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  14. A manufacture of TV sets produced 500 sets in the third year and 700 s...

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  15. Find the sum of all 3 digit numbers that are divisible by 4.

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  16. The sum of the three terms which are in an Arithmetic Progression is 3...

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  17. Find the sum of all three digit natural numbers, which are divisible b...

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  18. The sum of 5^(th) and 9^(th) terms of A.P. is 72 and the sum of 7th an...

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  19. Which term of G.P. : 3, 9, 27, ….. Is 2187?

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  20. Find the sum of all two digit positive integers which are divisible by...

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