CSIR NET JRF: Numerical Aptitude Questions (Practice-Test 8 of 12)

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1. A is twice as good a workman as B and together they finish a piece of work in 14 days. The number of days taken by A alone to finish the work, is

   1. 11

   2. 21

   3. 28

   4. 42

   5. 50

   Answer: b

2. A and B can do a work in 10 days. B and C in 12 days while C and A in 15 days. How long would they take if all the three work together?

   1. 5days

   2. 4 days

   3. 7 days

   4. 8 days

   5. 10 days

   Answer: d

3. A is twice as fast as B and B is thrice as fast as C is. The journey covered by C in 54 minutes will be covered by B in

   1. 18 min

   2. 27 min

   3. 38 min

   4. 9 min

   5. 10 min

   Answer: a

4. In how many seconds a cyclist will pass a distance of 100 metres at the speed of 10 km/hr.

   1. 25 sec

   2. 36 sec

   3. 40 sec

   4. 42 sec

   5. 50 sec

   Answer: b

5. At 3.40, the hour hand and the minute hand of a clock form an angle of

   1. 120o

   2. 125o

   3. 130o

   4. 135o

   5. 140o

   Answer: c

6. How many times are the hands of a clock at right angles in a day?

   1. 22

   2. 24

   3. 44

   4. 48

   5. 50

   Answer: c

7. Today is Tuesday. After 62 days it will be

   1. Wednesday

   2. Monday

   3. Thursday

   4. Sunday

   5. Tuesday

   Answer: b

8. The day on March of 5 of a year is the same day on what date of the same year?

   1. 5th August

   2. 5th October

   3. 5 November

   4. 5 December

   5. None of these

   Answer: c

9. A garden is 70 m long and 30 m wide. It is surrounded by a footpath 5 m wide outside. What is the area of the path?

   1. 2200 m2

   2. 1100 m2

   3. 550 m2

   4. 625 m2

   5. 700 m2

   Answer: b

10. If the volume of a sphere is divided by its surface area, the result is 27 cm. The radius of the sphere is

    1. 81 cm

    2. 9 cm

    3. 54 cm

    4. 36 cm

    5. 40 cm

    Answer: a