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JSCE Mathematics 2024 Objective — Question 56

Question 56 of 80 from the Junior Secondary Certificate Examination (JSCE) Mathematics 2024 Objective paper, with the correct answer and a full explanation.

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There are 3 squares, 3 circles, and 1 triangle card having the shapes inscribed in them. One more card is added. The probability of picking at random a card with a square-shaped inscribed in it is now 1/2. What shape must be on the card that is added?

  • A. square/triangle
  • B. circle/square
  • C. circle/triangle
  • D. square onlyCorrect

Explanation

There are 8 cards after one is added. For P(square) = 1/2, 4 cards must have a square, so the added card carries a square only.

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