Class 10 Math All topics Arithmetic Progressions
If a is constant then is
(a)
(b)
(c)
(d)
Correct answer: (b) 
Solution: 
1)

2)

Thus, difference between consecutive terms of A.P. is same. Thus, given series is in A.P.

Sum of first n terms of A.P. is given by,







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Similar topics
introduction to trigonometry
functions
some applications of trigonometry
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widgit image
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
surface areas and volumes