TS Police SI Prelims 2022 · Question 90

Question 90 of the TSLPRB SI Preliminary Written Test 2022 (7 August 2022). Try it first, then open the answer and explanation.

1. SI Prelims 2022 · Q90 · Reasoning & Mental Ability · Series & Analogies

   Among the given numbers 131,151,161,181,191, one is different from the others in one way. It is

   1. 131
   2. 181
   3. 161
   4. 191

   ఇచ్చిన సంఖ్యలు 131,151,161,181,191 లలో ఒకటి మిగిలిన వాటికి విభిన్నంగా ఉంటుంది. అది

   1. 131
   2. 181
   3. 161
   4. 191
   Show answer

   Answer: (3) 161

   సమాధానం: (3) 161

   131, 151, 181 and 191 are prime numbers, but 161 = 7 × 23 is not, so 161 is the odd one.

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