RRB Junior Engineer (JE) Sample Paper: Mathematics-30

Q1. Two numbers are in the ratio 3 : 5. Their LCM is 600. Find the sum of the numbers.

(a) 320
(b) 160
(c) 340
 (d) 280

Q2. Find the least number which is exactly divisible by 12, 15, 20 and 27.

(a) 650
(b) 520
(c) 600
(d) 540

Q3. Find the least number which when increased by 3 is exactly by 10,12 14 and 16.

(a) 1680
(b) 1677
(c) 1697
(d) 1670

Q4. Find the least number which when decreased by 4 is exactly divisible by 9, 12, 15 and 18.

(a) 188
(b) 182
(c) 186
(d) 184

Q5.. Find the least number which when divided by 12, 15, 20 and 24 leaves the same remainder 2 in each case.

(a) 122
(b) 120
(c) 124
(d) 126

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