RRB JE Mock Test 2019

1. What is the area of the triangle formed by the Points (–5, 7), (4, –1) and (4, –1)?       (4)

1. 1. 255
2. 2. 362
3. 3. 162
4. 4. None of these

2. Find the remainder when f (x) = 27x³ – 45x² + 9x + 12 is divided by g(x) = x – 1/3             (2)

1. 1. 3
2. 2. 11
3. 3. –12
4. 4. 14

3. B and C are equally efficient, but the efficiency of A is half of each B and C. A and B started a work and 3 days later C joined them. If A alone can do the work in 14 days, then in how many more days the work will be completed?           (1)

1. 1. 1
2. 2. 2
3. 3. 3
4. 4. 4.5

4. The traffic lights at three different road crossings change after 24 s, 36 s and 54 s, respectively. If they all change simultaneously at 10 : 15 : 00 am, then at what time will they again change simultaneously?    (2)

1. 1. 10 : 16 : 54 am
2. 2. 10 : 18 : 36 am
3. 3. 10 : 17 : 02 am
4. 4. 10 : 22 : 12 am

5. 1/(5×9)+1/(9×13)+1/(13×17)+ . . . . . . . . 1/(61×65)= ?                 (2)

1. 1. 4/45
2. 2. 3/65
3. 3. 2/35
4. 4. 3/35