Mock Test

Exam: RRB Group D Subject: Mathematics

Total Questions: 20

Q1. Two trains run on a circular track of 2 km. Their speeds are 30 km/h and 40 km/h. If they start from the same point and run in opposite directions, how many times will they meet in 2 hours?

30 times 40 times 50 times 60 times
Q2. A shopkeeper offers a discount of 15% on a dress. If the marked price is Rs. 1200, what is the selling price?

Rs. 980 Rs. 1000 Rs. 1020 Rs. 1050
Q3. Which of the following represents the number 'twenty-three million, one hundred thousand, and fifty-two'?

23,100,052 23,001,052 23,100,520 23,010,052
Q4. What percentage is 50 out of 200?

10% 20% 25% 50%
Q5. The prime factors of 24 are:

2, 3, 4 2, 3, 8 2, 2, 2, 3 2, 12
Q6. If an item's price increased from Rs. 40 to Rs. 50, what is the percentage increase?

10% 15% 20% 25%
Q7. Which of the following pairs of numbers (P(n), P(n+1)) are solutions to the Pell equation x^2 - 2y^2 = -1?

(1, 1) (2, 1) (5, 3) (12, 7)
Q8. A salesman's commission is 10% on sales up to Rs. 5000 and 20% on sales above Rs. 5000. If the total sales are Rs. 8000, then his total commission is:

Rs. 900 Rs. 1000 Rs. 1100 Rs. 1200
Q9. If a language has 30 phonemes and 10 of them are vowels, what percentage of phonemes are consonants?

33.33% 50% 66.67% 75%
Q10. Which of the following equations represents a Pythagorean triple?

$x + y = 10$ $x^2 + y^2 = z^2$ $3x - 4y = 5$ $2x + 2y = 6$
Q11. What is the profit percentage if an article bought for ₹200 is sold for ₹250?

20% 25% 30% 35%
Q12. A train travels from city P to city Q. It travels the first 150 km at 50 km/hr and the next 200 km at 40 km/hr. What is the average speed of the train for the entire journey?

43.64 km/hr 45 km/hr 46.25 km/hr 48 km/hr
Q13. What is the GCD of 30 and 50?

2 5 10 25
Q14. What is the value of C(7, 3)?

20 35 42 70
Q15. What is 4/5 as a percentage?

40% 50% 80% 45%
Q16. A car travels the first half of a certain distance at a speed of 40 km/h and the second half of the distance at a speed of 60 km/h. If the total time taken for the journey is 5 hours, what is the total distance covered?

100 km 120 km 240 km 300 km
Q17. By selling an article for Rs. 1800, a man makes a profit of 20%. What is the cost price?

Rs. 1440 Rs. 1500 Rs. 1600 Rs. 1700
Q18. The cost price of a book is Rs. 250. If it is sold for Rs. 300, what is the profit?

Rs. 25 Rs. 30 Rs. 40 Rs. 50
Q19. A, B and C can do a work in 10 days. A alone takes 30 days and B alone takes 20 days. What percentage of the work is done by C in 1 day?

5% 10% 15% 20%
Q20. Which of the following is an odd natural number?

4 8 11 16

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