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GATE Overflow Test Series | Spatial and Analytical Aptitude | Test 1 | Question: 24

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Which of the following represents a valid grouping of the following figures? (Mark all the appropriate choices)

  1. $(7,4,5),(8,1,3),(6,9,2)$
  2. $(1,5,9),(3,7),(2,4),(6,8)$
  3. $(1,3,8),(2,6,9),(4,5,7)$
  4. $(1,2,6),(4,3,5),(7,8,9)$
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Figures $1,3$ and $8$ contain a simple geometrical shape. Figures $2, 6$ and $9$ contain one geometrical shape divided into two equal parts by a straight line. Figures $4, 5$ and $7$ contain two straight lines dividing the main figure into four parts.

Thus, the given nine figures are divided into three groups as $(1,3,8), (2,6,9)$ and $(4,5,7).$

Option B is also a possible grouping as each group represents a shape.

So, the correct answer is $A;B;C.$
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For which of the following function(s), reflection about the $y-$axis give(s) the same function? (Mark all the appropriate choices)$f(x) = \sin x$$f(x) = \cos x$$f(x) = \...
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