RRB Junior Engineer (JE) Sample Paper: Mathematics-23

1. Find the least perfect square number divisible by 2, 3, 4, 5 and 6.

(a) 900
(b) 1600
(c) 2700
(d) 400

2. Find the least number by which 336 be multiplied to make it a perfect square.

(a) 42
(b) 36
(c) 34
(d) 46

3. Find the greatest four-digit perfect square number.

(a) 9801
(b) 9810
(c) 9809
(d) 9890

4. Find the greatest five-digit perfect square number.

(a) 99999
(b) 99856
(c) 99784
(d) 99436

5. Find the least four-digit perfect square number.

(a) 1089
(b) 1024
(c) 1156
(d) 1036

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