RAILWAY RRB MATHS QUESTION 7 December
Math and Logical Reasoning Questions
Q1. X is 5 ft tall and he notices that he casts a shadow that’s 3 ft long. He then measures that the shadow cast by his school building is 30 ft long. How tall is the building?
- (a) 50 ft
- (b) 18 ft
- (c) 90 ft
- (d) 150 ft
Correct answer: (a) 50 ft
Q10. 3 chairs and 2 tables cost Rs. 700 and 5 chairs and 3 tables cost Rs. 1100. What is the cost of 1 chair and 2 tables?
- (a) 350
- (b) 400
- (c) 500
- (d) 550
Correct answer: (c) 500
Q2. The LCM of two numbers is 210. If their HCF is 35 and one of the numbers is 105, find the other number.
- (a) 35
- (b) 70
- (c) 105
- (d) 140
Correct answer: (b) 70
Q3. Working alone, A can do a job in 15 days and B can do the same job in 18 days. In how many days will the job be completed if both work together?
- (a) 10/3 days
- (b) 90/11 days
- (c) 5/36 days
- (d) 15 days
Correct answer: (b) 90/11 days
Q4. 3 chairs and 2 tables cost Rs. 700 and 5 chairs and 3 tables cost Rs. 1100. What is the cost of 1 chair and 2 tables?
- (a) 350
- (b) 400
- (c) 500
- (d) 550
Correct answer: (c) 500
Q5. Find the LCM of 25/7, 15/28, 20/21.
- (a) 300/7
- (b) 300
- (c) 320/23
- (d) 320
Correct answer: (a) 300/7
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