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Home Quantitative Aptitude RRB NTPC Mathematics Questions: 15th May 2019

RRB NTPC Mathematics Questions: 15th May 2019

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As you all know, RRB NTPC Exam will be held in the month of June-September 2019. So we are here to help you with the Mathematics subject. We are providing daily quantitative aptitude quizzes on ADDA247 APP.

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Q1. A can do 75% of a job in 18 days and B can do 25% of the job in 12 days. If they work on it together, in how many days can they do 75% of the job?
A 18 दिनों में एक कार्य 75% कर सकता है और B, 12 दिनों में कार्य का 25% कर सकता है। यदि वे मिलकर कार्य करते हैं, तो वे कार्य का 75% कितने दिन में कर सकते हैं?
(a) 16
(b) 8
(c) 20
(d) 12
Q2. Area of 4 walls of a cuboid is 57 sq m, if its length is 5.5 m and height is 3 m. What is its breadth (in m)?
एक घनाभ की 4 दीवारों का क्षेत्रफल 57 वर्ग मीटर है, यदि इसकी लंबाई 5.5 मीटर है और ऊंचाई 3 मीटर है। इसकी चौड़ाई(मीटर में) कितनी है?
(a) 4.5
(b) 4
(c) 3
(d) 3 .5
Q3. At 30% discount the selling price of an article is Rs 1050. What is the selling price (in Rs) if the discount is 15%?
30% छूट पर एक वस्तु का विक्रय मूल्य 1050 रुपये है। यदि छूट 15% है तो विक्रय मूल्य (रुपये में) कितना है?
(a) 1200
(b) 1175
(c) 1100
(d) 1275
S3. Ans(d)

Q4. What is the fourth proportional to 336, 288 and 161?
336, 288 और 161  से चौथा आनुपातिक क्या है?
(a) 184
(b) 115
(c) 138
(d) 134
Q5. What is the average of all numbers between 9 and 90 which are divisible by 8?
9 और 90 के बीच सभी संख्याओं का औसत कितना है जो 8 से विभाज्य हैं?
(a) 53
(b) 52
(c) 51
(d) 50
Q6. A trader had 630 kgs of rice. He sold a part of it at 15% profit and the rest at 8% profit, so that he made a total profit of 12%. How much rice (in kgs)
did he sell at 8% profit?
एक व्यापारी के पास 630 किलोग्राम चावल थे। वह इसका एक भाग 15% लाभ और शेष 8% लाभ पर बेचता है, ताकि उसे 12% का कुल लाभ हो सके। वह 8% लाभ पर कितना चावल (किग्रा में) बेचता है?
(a) 270
(b) 300
(c) 280
(d) 290
Q7. 50% of a = b, then b% of 40 is the same as _________ of a.
a का 50% = b, तो 40 का b%, a के ________ समान है।  
(a) 0.25
(b) 0.16
(c) 2
(d) 0.2
Q8. Excluding stoppages, the speed of a train is 120 kmph and including stoppages, it is 50 kmph. For how many minutes does the train stop per hour?
स्टॉपपेज को छोड़कर, ट्रेन की गति 120 किमी/घंटे और स्टॉपपेज सहित, यह 50 किमी/घंटा है। ट्रेन प्रति घंटा कितने मिनट रुकती है?
(a) 25
(b) 40
(c) 35
(d) 20
Q9. The simple and compound interest that can be earned in two years at the same rate is Rs 4000 and Rs 4180 respectively. What is the rate (percent per annum) of interest?
समान दर पर दो वर्षों में अर्जित साधारण और चक्रवृद्धि ब्याज क्रमशः 4000 रु. और 4180 रु. है। ब्याज की दर(प्रतिशत प्रतिवर्ष) कितनी है?   
(a) 18
(b) 4.5
(c) 9
(d) 1 2
Q10. If 2x/3 – [5(4x/5 – 4/3)]/2 = 1/3, then what is the value of x? 
यदि 2x/3 – [5(4x/5 – 4/3)]/2 = 1/3 है, तो x का मान कितना है?
(a) 9/4
(b) 4/9
(c) -9/4

(d) -4/9

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