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The sum of the series 3 ½ + 7 + 10 ½ + 14 + …. To 17 terms is
  • a)
    530
  • b)
    535
  • c)
    535 ½
  • d)
    none of these
Correct answer is option 'C'. Can you explain this answer?

Answers

Here asked sum of 17th term, now we will use the formula is
= n/2 [ 2a + ( n-1)* d ]
= 17 /2 [ 2*(3 1/2) + (17 - 1 ) ( 3 1/2) ]
= 8.5 [ 7 + 16 ( 3 1/2 )
= 8.5 [ 7 + 56 ]
= 8.5 [ 63]
=535.5

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The sum of the series 3 ½ + 7 + 10 ½ + 14 + …. To 17 terms isa)530b)535c)535 ½d)none of theseCorrect answer is option 'C'. Can you explain this answer?
N=17, a=3.1/2= 3.5, d= 3.1/2= 3.5
= n/2 [ 2a + ( n-1)* d ]

= 17 /2 [ 2*(3 .5) + (17 - 1 ) ( 3 .5) ]

= 8.5 [ 7 + 16 ( 3 .5 )

= 8.5 [ 7 + 56 ]

= 8.5 [ 63]

=535.5

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The sum of the series 3 ½ + 7 + 10 ½ + 14 + …. To 17 terms isa)530b)535c)535 ½d)none of theseCorrect answer is option 'C'. Can you explain this answer? for CA Foundation 2023 is part of CA Foundation preparation. The Question and answers have been prepared according to the CA Foundation exam syllabus. Information about The sum of the series 3 ½ + 7 + 10 ½ + 14 + …. To 17 terms isa)530b)535c)535 ½d)none of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for CA Foundation 2023 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The sum of the series 3 ½ + 7 + 10 ½ + 14 + …. To 17 terms isa)530b)535c)535 ½d)none of theseCorrect answer is option 'C'. Can you explain this answer?.
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Here asked sum of 17th term, now we will use the formula is= n/2 [ 2a + ( n-1)* d ] = 17 /2 [ 2*(3 1/2) + (17 - 1 ) ( 3 1/2) ]= 8.5 [ 7 + 16 ( 3 1/2 )= 8.5 [ 7 + 56 ]= 8.5 [ 63]=535.5