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RRB NTPC Mathematics Quiz : 14th November

Q1. A and B together can complete a work in 30 days. B alone does 2/3 rd part of this work in 24 days. How many days will A alone take to complete the remaining work?
(a) 96
(b) 48
(c) 60
(d) 72

Q2. The heights of a cone and a cylinder are equal. The radii of their bases are in the ratio 6 : 5, the ratio of their volumes is
(a) 12 : 25
(b) 13 : 45
(c) 12 : 17
(d) 12 : 27

Q3. A shopkeeper marks his goods 50% more than the cost price and allows a discount of 25%. His profit or loss percentage is
(a) 37.5%loss
(b) 25.5%profit
(c) 12.5%profit
(d) 25%profit

Q4. A school has 8 periods of 45 minutes each every day. How long will each period be if the school has to have 9 periods everyday assuming the working hours to be same?
(a) 40 min
(b) 35 min
(c) 30 min
(d) 45 min

Q5. If the ratio of the cost price and the selling price of an article be 4 : 5, the percentage of profit is
(a) 27.5%
(b) 25%
(c) 15%
(d) 10%

Q6. In an ornament, the ratio of gold and copper is 3 : 2. The percentage of gold in the ornament is
(a) 60 %
(b) 40%
(c) 30%
(d) 20%

Q7. A boat moves down stream at the rate of 8 kmph and upstream at 4 kmph. The speed of boat in still water is
(a) 4.5 kmph
(b) 5 kmph
(c) 6 kmph
(d) 6.4 kmph

RRB NTPC Mathematics Quiz : 14th November_50.1
(a) 13
(b) 14
(c) 15
(d) 16

RRB NTPC Mathematics Quiz : 14th November_60.1
(a) 3
(b) 2
(c) 1
(d) 0

Q10. Which one of the following combination of measurements (in cm), can form the sides of a triangle?
(a) 9, 6, 2
(b) 11, 3, 12
(c) 3, 5, 8
(d) 5, 7, 13

 

solutions:-

RRB NTPC Mathematics Quiz : 14th November_70.1

RRB NTPC Mathematics Quiz : 14th November_80.1

 

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