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JKSSB Junior Engineer (Mechanical) · Reasoning · 16 practice questions with answers and explanations: 10 Easy, 6 Medium, 0 Hard.

Sample questions

Sample Easy question 1

In a co-ed school, which arrangement best represents 'Students', 'Boys' and 'Girls' (mutually exclusive subsets)?

  1. Two overlapping circles (Boys, Girls) inside a larger circle (Students)
  2. A single circle for all the three groups
  3. Two non-overlapping circles (Boys, Girls) inside a larger circle (Students)
  4. Boys circle drawn completely inside the Girls circle
Show answer

Answer: C. Boys and Girls never overlap, but both are subsets of Students.

Sample Easy question 2

Which arrangement best represents 'Fruits', 'Mangoes' and 'Apples'?

  1. One big circle (Fruits) containing two separate, non-overlapping circles (Mangoes, Apples)
  2. One single circle that represents all the three groups
  3. Three separate circles with no overlap or nesting among them
  4. Two circles fully overlapping each other, inside a larger circle
Show answer

Answer: A. Mangoes and Apples are both distinct types of Fruits, so both are separate circles nested inside the Fruits circle.

Sample Easy question 3

Which arrangement best represents 'Men', 'Doctors' and 'Women'?

  1. Three separate circles with no overlap between any of them
  2. Two non-overlapping circles (Men, Women), each partially overlapped by a third circle (Doctors)
  3. One single circle that represents all three groups together
  4. Doctors circle drawn completely inside the Men circle only
Show answer

Answer: B. Doctors can be either men or women, so the Doctors circle overlaps both the Men and Women circles, which don't overlap each other.

Sample Medium question 4

If some students are both athletes and musicians, which diagram represents 'Students', 'Athletes' and 'Musicians'?

  1. Three circles all overlapping in the middle
  2. Three completely separate circles
  3. Athletes circle inside Musicians circle only
  4. Students circle with no overlap with the other two
Show answer

Answer: A. Since some students are also athletes and musicians, all three circles overlap.

Sample Medium question 5

If some managers are also engineers, which diagram best fits 'Employees', 'Managers' and 'Engineers'?

  1. Two overlapping circles (Managers, Engineers), both inside a larger circle (Employees)
  2. Three separate circles that do not overlap with each other
  3. Engineers circle inside Managers circle, both outside the Employees circle
  4. Employees circle drawn inside the Managers circle
Show answer

Answer: A. Managers and Engineers overlap where some people are both, and both groups are Employees.

Sample Medium question 6

Which arrangement best represents 'Vehicles', 'Two-wheelers' and 'Four-wheelers' (mutually exclusive categories)?

  1. Two non-overlapping circles, both inside a larger circle (Vehicles)
  2. Two overlapping circles, both inside a larger circle (Vehicles)
  3. One circle drawn inside the other, both inside the Vehicles circle
  4. A single circle that represents all the three groups
Show answer

Answer: A. Two-wheelers and Four-wheelers never overlap, but both are subsets of Vehicles.

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