Arithmetic Progression  Quant/Math  CAT 2016
Question 4 the day : February 18, 2003
The question for the day is from the topic Arithmetic Progression. It is about finding a particular term of an AP given the sum of two other terms of the same AP
Question
The sum of third and ninth term of an A.P is 8. Find the sum of the first 11 terms of the progression.
(1) 44
(2) 22
(3) 19
(4) None of these
Correct Answer is 44 and Correct Choice is (1)
Explanatory Answer
The third term t _{3} = a + 3d
The ninth term t _{9} = a + 8d
t _{3} + t _{9} = 2a + 10d = 8
Sum of first 11 terms of an AP is given by
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