TGPSC HMWSSB Manager 2015 Paper 1 · Question 145

Question 145 of the TSPSC Manager (Engineering), HMWSSB, 2015: Paper 1 (General Studies) (1 November 2015). Try it first, then open the answer and explanation.

1. Manager 2015 Paper 1 (GS) · Q145 · Reasoning & Data Interpretation · Arithmetic & Mental Ability

   What should come in the place of '?' in the following series? 1, 4, 27, 4, 25, 216, 7, ?

   1. 49
   2. 343
   3. 512
   4. 64

   ఈ కింది సిరీస్‌లో '?' స్థానంలో ఏ సంఖ్య వస్తుంది? 1, 4, 27, 4, 25, 216, 7, ?

   1. 49
   2. 343
   3. 512
   4. 64
   Show answer

   Answer: (4) 64

   సమాధానం: (4) 64

   The series goes in groups of three: n, (n + 1)², (n + 2)³. So 1, 2² = 4, 3³ = 27; then 4, 5² = 25, 6³ = 216; then 7, 8² = 64.

   ఈ సిరీస్ మూడేసి పదాల సమూహాలుగా సాగుతుంది: n, (n + 1)², (n + 2)³. కాబట్టి 1, 2² = 4, 3³ = 27; తర్వాత 4, 5² = 25, 6³ = 216; తర్వాత 7, 8² = 64.

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