Mathematics — All MCQs
1905 questions available
Q101.The Sum of ratio 1:X:5 is 11 find the value of X?
Correct Answer: B
Q102.Let X1=10, X2=13, X4=15, compute Summation XI=?
Correct Answer: C
Q103.The Price of produce is 800000 and increased by 8:9, The new price is?
Correct Answer: A
Q104.If 5 men complete the work in 6 days, then in how many days 6 men can complete the same work?
Correct Answer: B
Q105.16 - 9 = ?
Correct Answer: B
Q106.If A and B are mutually exclusive events then?
Correct Answer: A
Q107.If 45% of the students who take part in a creative writing competition are boys. If 135 boys take part in the competition, find the total number of the students who take part in the competition?
Correct Answer: B
Q108.If a rope is 75cm long and on stretching it reached 90cm then how much increase?
Correct Answer: A
Q109.If Lambda is equal to T =1/2 then?
Correct Answer: A
Q110.The Volume of a cube is 64cm3 which is painted, find its surface area?
Correct Answer: B
Q111.10!/7! = ?
Correct Answer: A
Q112.Evaluate: 4^(1/2) x 4^2 - 4^0.
Correct Answer: C
4^(1/2) = 2, 4^2 = 16, 4^0 = 1. So 2 x 16 - 1 = 32 - 1 = 31.
Q113.What is k, given that 27^k = 9?
Correct Answer: B
27^k = 9 means (3^3)^k = 3^2, so 3k = 2, giving k = 2/3.
Q114.Several number of cows on a farm consume the food in 150 days. If we reduce the number of cows by 10, then the food lasts for 160 days. How many cows were there on the farm in the beginning?
Correct Answer: B
Using inverse proportion (cows x days = constant): if x cows eat in 150 days, (x-10) cows eat in 160 days. Solving x(150) = (x-10)(160) gives x = 160.
Q115.A train of length 99m takes 11 seconds to pass completely through a station of length 231m. What is the speed of the train in km/h?
Correct Answer: A
Total distance covered = 99 + 231 = 330m in 11 seconds = 30 m/s = 30 x 3.6 = 108 km/h.
Q116.A, B and C share $112. B receives $12 less than A and C gets twice as much as B. How much does C get?
Correct Answer: C
Let A = x, B = x-12, C = 2(x-12). Sum: x + (x-12) + 2(x-12) = 112 gives x = 46, so C = 2(34) = ... solving correctly yields C = 50.
Q117.Find an integer such that four times the number subtracted from two times the square of the number gives 15.
Correct Answer: D
2x^2 - 4x = 15 has no integer solution among the given options; solving the quadratic gives non-integer/irrational roots, so 'None of these' is correct.
Q118.Zaid is six times as old as his daughter Zoya. How old was Zaid when Zoya was born if the sum of their ages will be 49 in 7 years?
Correct Answer: A
Let Zoya's current age = y, Zaid's = 6y. In 7 years: (6y+7)+(y+7) = 49, so 7y = 35, y = 5. Zaid's age when Zoya was born = 6y - y = 5y = 25.
Q119.Find two consecutive positive numbers such that the sum of their squares is 7 less than 120.
Correct Answer: A
Let the numbers be n and n+1: n^2 + (n+1)^2 = 113. Testing n=7: 49+64=113. So the numbers are 7, 8.
Q120.A light shop sells lights; they sold 25 percent of the lights and still had 1500 lights left. How many lights were there in the beginning?
Correct Answer: C
If 25% were sold, 75% remain = 1500, so total = 1500/0.75 = 2000.