Class 11 Math Algebra Sequences and series
The sum of first terms of an is and sum of its next fourteen terms is . Find the .
Solution: 
Given
sum of next 14 terms = 518
sum of next 14 terms is 518
sum of (16 + 14) terms
Subtracting equation (1) from (2)
   -        -     -
_____________
Substitute value of d in equation (1)
If 'a' is the first term and 'd' is a common difference then the A.P is

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determinants
matrices
binomial theorem
complex numbers and quadratic equations
sequences and series
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Connecting you to a tutor in 60 seconds.
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determinants
matrices
binomial theorem
complex numbers and quadratic equations
sequences and series