TS Police Constable Prelims 2022 · Question 126

Question 126 of the TSLPRB Police Constable Preliminary Written Test 2022 (28 August 2022). Try it first, then open the answer and explanation.

1. PC Prelims 2022 · Q126 · Reasoning & Mental Ability · Series & Analogies

   Select the suitable alternative to replace '?' in the following so as to keep the analogy as is there in the two sets of numbers given left to '?' mark 7 : 49 : 56 :: 5 : 25 : 30 :: ?

   1. 4 : 16 : 64
   2. 3 : 9 : 12
   3. 8 : 16 : 24
   4. 5 : 30 : 35

   దిగువన '?' కు ఎడమవైపున ఇచ్చిన రెండు సంఖ్యా సమితిలలో గల సారూప్యాన్ని పాటించే సరియైన ఐచ్ఛికాన్ని ఎన్నుకొని '?' ను భర్తీ చేయండి. 7 : 49 : 56 :: 5 : 25 : 30 :: ?

   1. 4 : 16 : 64
   2. 3 : 9 : 12
   3. 8 : 16 : 24
   4. 5 : 30 : 35
   Show answer

   Answer: (2) 3 : 9 : 12

   సమాధానం: (2) 3 : 9 : 12

   Each set is n : n² : n² + n, i.e. 7 : 49 : 56 (49 + 7) and 5 : 25 : 30 (25 + 5); likewise 3 : 9 : 12 (9 + 3). Option (1) is n : n² : n³ and option (3) is n : 2n : 3n, so they do not fit.

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