Railway Exams Math [ No. System ]

এই পর্বে আমরা Railway Exam এর জন্য বাছাই করা 28 টি No. System এর অঙ্কের প্রশ্ন উত্তর নিয়ে এসেছি। আজ প্রথম পর্ব। রেলের যে কোন পরীক্ষার জন্য [ Railway NTPC, Rail Gr. D, JE, RPF etc] সমানভাবে উপকারী। এই প্রশ্ন গুলির ভিডিও সমাধান পেতে আমার ইউ টিউব চ্যানেল @bengaliman সাবস্ক্রাইব করে রেখো। প্রশ্নের উত্তর আগে নিজে করো এবং এর PDF টি অবশ্যই সংগ্রহ করে নিও।

Railway Exams Math

1. From 3/4 of a number P, Ramakrishna subtracts 2/3 of another number Q and obtain 5/8 as the difference. What is the answer Ramakrishna should obtain if he subtracts eight times of Q from nine times of P? (1) 15/2 (2) 25/4 (3) 20/3 (4) 25/3

2. In a class of 80 students 1/10 of the class likes chocolate D and 1/20 of the class likes chocolate E. What is the difference between the number of students who like chocolate D and the number of students who like chocolate E ? (1) 2 (2) 9 (3) 5 (4) 4

3. Sunita won 3/5 of the marbles that were in the beginning of the game. Ravi won 2/3 of the remaining marbles while Sunny won the remaining 60 marbles. How many marbles did Sunita win? (1) 255 (2) 240 (3) 285 (4) 270

4. The difference between two numbers is 18. If the difference between their squares is 360, find the larger number. (1) 18 (2) 15 (3) 19 (4) 16

5. A 3 digit number is such that the ratio of its units digit, tens digit and hundreds digit is 1:2 : 3. The sum of this number and the reversed number obtained by reversing the order of its digits is 1332. Find the number. (1) 246 (2) 414 (3) 369 (4) 963

6. A man plants 21,025 mango trees in his garden in such a way that there are as many rows as there are mango trees in each row. Find the number of rows. (1) 135 (2) 125 (3) 145 (4) 130

7. The sum of two numbers is 27. Five times one number is equal to 4 times the other. The smaller of the two numbers is (1) 12 (2) 11 (3) 13 (4) 15

8. There are two consecutive natural numbers such that the sum of their squares is 313. Find smaller of these two numbers. (1) 12 (2) 14 (3) 15 (4) 13

9. Find the number whose 1/3 rd part is 6 more than its 1/5 th part (1) 50 (2) 45 (3) 40 (4) 35

10. The sum of two numbers is 32 and one of them exceeds the other by 18. Find the greater number. (1) 25 (2) 28 (3) 24 (4) 27

11. The cost of 2 tables and 3 chairs is Rs 540, while that of 2 tables and 1 chair is Rs 470. What is the cost of 5 chairs ? (1) Rs 245 (2) Rs 205 (3) Rs 175 (4) Rs 185

12. A number is split into two parts such that one part is 14 more than the other, and the ratio of the two parts is 7: 5. Find the number. (1) 49 (2) 35 (3) 84 (4) 54

13. The sum of two numbers is 20 and the difference is 16. The ratio of the larger number to the smaller number is (1) 1:9 (2) 11:2 (3) 2:11 (4) 9:1

14. Ujjwal has Rs 5,250 in currency in currency notes of denominations Rs 50, Rs 100 and Rs 200. The number of notes of each denomination are equal. How many notes in total does Ujwal have ? (1) 30 (2) 45 (3) 60 (4) 15

15. Pragya invited male and females to her birthday party in the ratio of 7 6. If the number of males in the party were 56, then the total number of guests attending the party were? (1) 48 (2) 104 (3) 108 (4) 112

16. What is the sum of the cube of the natural numbers from 1 to 10, both inclusive? (1) 3023 (2) 3025 (3) 3024 (4) 3022

17. What is the sum of the cubes of the natural numbers from 5 to 14? (1) 10930 (2) 10925 (3) 10935 (4) 10920

18. The sum of two numbers is 40 and their product is 60. The sum of their reciprocals is: (1) 3/4 (2) 3/2 (3) 2/3 (4) 1/2

19. What is the sum of the squares of the numbers from 3 to 18? (1) 2103 (2) 2102 (3) 2101 (4) 2104

20. The sum of two numbers is 20 and their product is 96. What is the difference between the two numbers? (1) 4 (2) 5 (3) 6 (4) 8

21. The difference between two numbers which in the ratio 5: 3 is 50. What is the product of the numbers? (1) 1035 (2) 9375 (3) 8575 (4) 9975

22. 3/5 of a number is 10 more than half of the second number. If 8 is subtracted from 3/7 of the first number, then it becomes 4 less than half of the second number. What is the sum of the two numbers? (1) 56 (2) 57 (3) 54 (4) 55

23. one fourth of one eight of a number is 300. What is one fifth of the same number ? (1) 1900 (2) 1910 (3) 1920 (4) 1890

24. If X+Y = 11 then (- 1)^X + (- 1)^Y is equal to ……… (where X and Y are whole numbers) (1) -1 (2) 1 (3) 2 (4) 0

25. A number when reduced by 22 % becomes 217. Find the number . (1) 315 (2) 212 (3) 280 (4) 420

26. The difference between a number of two digits and the new number formed when the digits are interchanged is 45. Find the difference between the two digits. (1) 4 (2) 5 (3) 6 (4) 7

27. The sum of the digits of a two digit number is 13. If those digits are interchanged, the number gets decreased by 27. Find the changed number. (1) 85 (2) 76 (3) 67 (4) 58

28. The sum of a two digit number and the number formed by interchanging its digits is 99. Find the number if the difference of the digits is 3. (1) 27 (2) 63 (3) 45 (4) 54

Answers : (1) 1 (2) 4 (3) 4 (4) 3 (5) 4 (6) 3 (7) 1 (8) 1 (9) 2 (10) 1 (11) 3 (12) 3 (13) 4 (14) 2 (15) 2 (16) 2 (17) 2 (18) 3 (19) 4 (20) 1 (21) 2 (22) 2 (23) 3 (24) 4 (25) 3 (26) 2 (27) 4 (28) 2

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