Mathematics Quiz For RRB NTPC : 11th December

Q1. If the cost price of 10 chairs be equal to the selling price of 16 chairs, then the loss percent is
(1) 9.6
(2) 17.5
(3) 20
(4) 37.5

Q2. An amount of Rs. 6,000 lent at 5% per annum compound interest for 2 years will become
(1) Rs. 600
(2) Rs. 6,600
(3) Rs. 6,610
(4) Rs. 6,615

Q3. At a certain rate of simple interest, a certain sum of money becomes double of itself in 10 years. It will become treble of itself in
(1) 15 years
(2) 18 years
(3) 20 years
(4) 30 years

Q4.The length of each side of an equilateral triangle is 14√3 cm. The area of the incircle, in cm2, is
(a) 450
(b) 308
(c) 154
(d) 77

Q5. A sum of money placed at compound interest doubles in 3 years. In how many years will it become four times?
(a) 5
(b) 6
(c) 4
(d) 7

Q6. The side of a triangle are in the ratio of 1/2:1/3:1/4 if the perimeter is 104 cm. What is the sum of the largest side & smallest side?
(a) 80
(b) 84
(c) 72
(d) 56

Q7. What is (in unit square) the area of a triangle with side length 4 unit, 6 unit and 8 unit?
(a) 22.21
(b) 11.61
(c) 13.78
(d) None of these

Q8. The area of a circle is 324 𝜋 sq. cm. The length of its longest chord (in cm.) is
(a) 28
(b) 32
(c) 36
(d) 38

Q9. Find the sum of all positive multiples of 5 less than 100.
(a) 925
(b) 960
(c) 950
(d) 990

Q10. If sum of the two numbers is 80 and ratio is 3 : 5, then find numbers.
(a) 50, 80
(b) 60, 20
(c) 20, 60
(d) 30, 50

 

Solutions:

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