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2000 · Q146Science & TechnologyLogical Reasoning & Puzzlesmoderate

The following figure represents time vs. learning curves of two students, Q and R, for learning a Mathematics lesson. Which one of the following inferences can be drawn from the graph?

  1. (a)R started slowly in the beginning but got ahead of Q to complete learning the lesson
  2. (b)Q started slowly and finished learning the lesson earlier than R
  3. (c)R was always faster than Q in learning Mathematics
  4. (d)Q was always faster than R in learning Mathematics
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Official answer(b) Q started slowly and finished learning the lesson earlier than R

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