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2010 · Q131Science & TechnologyLogical Reasoning & Puzzleseasy

Examine the following statements : 1. All colours are pleasant. 2. Some colours are pleasant. 3. No colour is pleasant. 4. Some colours are not pleasant. Given that the statement 4 is true, what can be definitely concluded ?

  1. (a)1 and 2 are true
  2. (b)1 is false
  3. (c)2 is false
  4. (d)3 is true
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Official answer(b) 1 is false

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