Class 10 Math All topics Arithmetic Progressions



In an A.P., the sum of the first 10 terms is 150, and the sum of the next 10 terms is 550. Find the A.P.
Solution: 
From the question it is given that, 
The sum of the first 10 terms
The sum of the next 10 terms
A.P
We know that,
Then,

Now, multiplying equation(i) by 2 we get,
Subtract equation (iii) from equation (ii),

Substitute the value of d in equation (i) we get,
Therefore, A.P. is 3, -1, -5, -9, …

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Similar topics
introduction to trigonometry
functions
some applications of trigonometry
quadratic equations
polynomials
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Connecting you to a tutor in 60 seconds.
Get answers to your doubts.
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introduction to trigonometry
functions
some applications of trigonometry
quadratic equations
polynomials