RRB Junior Engineer (JE) Sample Paper: Mathematics-25

1. In a fraction, if 2 is subtracted from the denominator, the faction becomes 1. If 1 is subtracted from both the numerator and the denominator, the fraction becomes 3/4. What is the denominator of the fraction?

(a) 6
(b) 7
(c) 8
(d) 9

2. If x + y – z = m and if, x – y + z = n, then x is equal to

(a) (m + n)/2
(b) m – n
(c) 2m + n
(d) m + n

3. It is required to change a rupee coin into 2 paise and 5 paise coins with the total number of coins equal to 26. Find the number of each type of coins.

(a) 10 and 16
(b) 12 and 14
(c) 10 and 20
(d) 14 and 14

4. Given that 9/2x + 3y = 21 and 1/2x – 8y = 4. Find the value of 12x – 12y.

(a) 12
(b) 30
(c) 25
(d) 60

5. Let A = (x + 1)/(x – 1) and B = (x – 1)/(x + 1). Determine the value of A – B.

(a) 0
(b) x/(x2 –1)
(c) 4x/(x2 – 1)
(d) None of these

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