TS Police SI Mains 2023 Paper 3 · Question 24

Question 24 of the TSLPRB SI Final Written Examination 2023, Paper III (Arithmetic & Reasoning) (8 April 2023). Try it first, then open the answer and explanation.

1. SI Mains 2023 Paper III · Q24 · Arithmetic · Numbers & Simplification

   In an Arithmetic progression, if 10th term is −14, 31st term is −119 then the sum of 6th term and 8th term is

   1. 2
   2. −5
   3. 31
   4. 0

   ఒక అంకశ్రేఢిలో, 10వ పదం −14, 31వ పదం −119 అయితే 6వ పదం మరియు 8వ పదాల మొత్తం

   1. 2
   2. −5
   3. 31
   4. 0
   Show answer

   Answer: (1) 2

   సమాధానం: (1) 2

   a + 9d = −14 and a + 30d = −119 give 21d = −105, so d = −5 and a = 31. Then T6 = 31 − 25 = 6 and T8 = 31 − 35 = −4, and their sum is 2.

   a + 9d = −14 మరియు a + 30d = −119 నుండి 21d = −105, కాబట్టి d = −5 మరియు a = 31. అప్పుడు T6 = 31 − 25 = 6 మరియు T8 = 31 − 35 = −4, వాటి మొత్తం 2.

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