SawaalBoxसवाल बॉक्स
1996 · Q135Science & TechnologyLogical Reasoning & Puzzlesmoderate

Two important characteristics of a hypothesis are that it should be testable and that it should be stated in a manner that it can be refuted. Which one of the following hypotheses fulfils these characteristics?

  1. (a)Intelligent persons have good memory
  2. (b)Some birds are animals
  3. (c)Some businessmen are dishonest
  4. (d)All men are mortal
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Official answer(a) Intelligent persons have good memory

2010 · Q80Science & TechnologyLogical Reasoning & Puzzlesmoderate

Half of the villagers of a certain village have their own houses. One-fifth of the villagers cultivate paddy. One-third of the villagers are literate. Four-fifth of the villagers are below twenty-five. Then, which one of the following is certainly true?

  1. (a)All the villagers who have their own houses are literate
  2. (b)Some villagers under twenty-five are literate
  3. (c)A quarter of the villagers who have their own houses cultivate paddy
  4. (d)Half of the villagers who cultivate paddy are literate
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Official answer(b) Some villagers under twenty-five are literate