RRB Junior Engineer (JE) Sample Paper: Mathematics-28

1. Find the LCM of 3, 9, 12, 15, 6.

(a) 240
(b) 90
(c) 180
(d) 120

2. Find the HCF of 120, 150, 180.

(a) 30
(b) 60
(c) 50
(d) 10

3. Find the HCF of 2378 and 3280.

(a) 86
(b) 84
(c) 80
(d) 82

4. Find the HCF of

(a) 3/2
(b) 1/2
(c) 1
(d) 3

5. Find the LCM and HCF of 0.25, 0.5, 0.75.

(a) 7.5, 0.05
(b) 0.75, 0.5
(c) 0.75, 0.05
(d) 7.5, 0.5

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