RRB NTPC Mathematics Quiz : 16th November

Q4. What is the unit’s place of 11123?
(a) 2
(b) 1
(c) 3
(d) 5.

Q5. How many two digit numbers are divisible by 5 but not by 8?
(a) 22
(b) 16
(c) 20
(d) 18

Q6. Pipe A can fill a tank in 12 hours and Pipe B can fill the tank in 18 hours. If both the pipes are opened on alternate hours and if pipe B is opened first, then in how much time (in hours) the tank will be full?

Q7. A, B and C can do a piece of work in 20, 24 and 30 days respectively. All three of them began the work together but B left 3 days before completion ofthe work. In how many days was the work completed?
(a) 7
(b) 10
(c) 12
(d) 9

Q8. The marked price of an article is Rs 8480. If a discount of 12.5% is given, then what will be the selling price (in Rs) of the article?
(a) 7420
(b) 6890
(c) 6360
(d) 7380

Q9. An item is sold for Rs 1428 after two successive discounts of 12.5% and 20%. What is the marked price (in Rs) of the article?
(a) 2000
(b) 2100
(c) 2040
(d) 2400

solutions:-

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