RRB Junior Engineer (JE) Sample Paper: Mathematics-33

1. The traffic lights at three different road crossings change after every 48,72 and 108 s respectively. If they change simultaneously at 9 am,at what time will they change again simultaneously.

(a) 10 min 10 s
(b) 7 min 12 s
(c) 7 min 10 s
(d) 12 min 10 s

2. Find the smallest four digit number that is exactly divisible by 8,10 and 12.

(a) 1080
(b) 1100
(c) 1050
(d) 1120

3. Find the greatest five digit number exactly divisible by 6,8, and 12.

(a) 99924
(b) 99988
(c) 99984
(d) 99972

4. Find the greatest number which will divide by 321,428 and 535 exactly.

(a) 105
(b) 107
(c) 109
(d) 102

5. Find the greatest possible length which can be used to measure 4m 3cm, 4m 34cm and 4 m 65 cm exactly.

(a) 31 cm
(b) 29 cm
(c) 28 cm
(d) 32 cm

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1(b), 2(a), 3(c), 4(b), 5(a)`