Question

# The sum of the first 55 term of an A.P is 3300. Find the 28th term.

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Solution

## Let the first term be a and common difference be d. Then sum of first 55 terms =552(2a+54d)=55a+1485d=3300 →a+27d=60........(i) 28th term = a +(28 - 1) d = a + 27 d. Hence, from (i), the 28th term is 60.

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