Mathematics — All MCQs
1905 questions available
Q1341.A shopkeeper marked an item 25% above its cost price. During a sale, he offered a discount of 10%. What was his profit percentage?
Correct Answer: B
Let CP=100. Marked Price (MP) = 125. Selling Price (SP) = 125 - (10% of 125) = 125 - 12.5 = 112.5. Profit = 12.5%.
Q1342.After 25% discount and 55% tax on discounted price, the final price is 1260. The original price is:
Correct Answer: B
Let price be x. Discounted = 0.75x. Taxed = 0.75x * 1.55 = 1.1625x = 1260 => x = 1260 / 1.1625 = 1083.87 ~ 1084.
Q1343.A number is increased by 12% and then decreased by 12%. The final result is:
Correct Answer: C
Let original = 100. Increased = 112. Decreased = 112 - (112*0.12) = 112 - 13.44 = 98.56. Change = 1.44% decrease.
Q1344.A dishonest trader sells goods of 900 grams weight as 1 kg. Then his profit percentage is?
Correct Answer: B
He gives 900g instead of 1000g. Cost represents 900g. Earns 100g profit on a cost of 900g. Profit % = (100/900)*100 = 11.11%.
Q1345.10% of 20 + 20% of 10 increases the number by?
Correct Answer: C
10% of 20 = 2. 20% of 10 = 2. Sum = 2 + 2 = 4.
Q1346.One-fourth of one third of two-fifth of a number is 15. What is the 40% of that number
Correct Answer: D
Equation: (1/4)*(1/3)*(2/5)*x = 15 => (2/60)*x = 15 => x = 15 * 30 = 450. 40% of 450 = 180.
Q1347.A person travels 80 km north and 60 km west. How far is he from starting point?
Correct Answer: B
Form a right-angled triangle. Hypotenuse = sqrt(80^2 + 60^2) = sqrt(6400 + 3600) = sqrt(10000) = 100 km.
Q1348.Profit % question (10% less buy, 10% more sell)?
Correct Answer: C
Standard combined formula: New ratio is 110/90. Profit = (110 - 90)/90 = 20/90 = 22.22%.
Q1349.There is 10%, 20% and 40% discount on a thing. What single discount is equivalent to all of them together?
Correct Answer: B
Multiplier = (1-0.10)*(1-0.20)*(1-0.40) = 0.9 * 0.8 * 0.6 = 0.432. Net discount = 1 - 0.432 = 0.568 = 56.8%.
Q1350.Find the 8th term of the series 1, 3, 9, ...
Correct Answer: A
This is a GP with a=1 and r=3. The nth term formula is an = a * r^(n-1). For n=8: a8 = 1 * 3^7 = 2187.
Q1351.What is 50% of 75% of 200?
Correct Answer: D
Calculated as: 75% of 200 = 150. 50% of 150 = 75.
Q1352.What is 70% of 200?
Correct Answer: B
Calculated as: 200 * (70/100) = 140.
Q1353.In a class of 40 students, 8% are boys. How many boys are there in the class?
Correct Answer: B
Number of boys = 8% of 40 = 0.08 * 40 = 3.2. Rounded to the nearest whole integer, we get 3 boys.
Q1354.The average of four consecutive odd numbers is 24. The largest number is:
Correct Answer: C
Let consecutive odd numbers be: x, x+2, x+4, x+6. Sum = 4x + 12. Average = x + 3 = 24 => x = 21. Largest = 21 + 6 = 27.
Q1355.A train covers 150 km in 3 hours. How much distance in 8 hours?
Correct Answer: C
Speed of train = Distance / Time = 150 / 3 = 50 km/h. Distance in 8 hours = Speed * Time = 50 * 8 = 400 km.
Q1356.A company has sales data for 5 years. If the revenue is $5000 and costs are $3500, what is the profit?
Correct Answer: B
Calculated as: Profit = Revenue - Costs = $5000 - $3500 = $1500.
Q1357.A bag contains 3 red, 4 green, and 1 blue ball. If 1 more green ball is added, what is the new probability of picking a green ball?
Correct Answer: B
Initial total = 8. Adding 1 green ball makes total = 9, and green balls = 5. Probability = Green / Total = 5/9.
Q1358.A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?
Correct Answer: D
Speed = 60 * (5/18) = 50/3 m/s. Length = Speed * Time = (50/3) m/s * 9 s = 150 meters.
Q1359.In a group of 550 students, 42% go on a tour. How many students go on tour?
Correct Answer: D
Tour group size = 42% of 550 = 550 * 0.42 = 231.
Q1360.One Billion is equal to _____?
Correct Answer: C
By international scale conversion: 1 Billion = 1,000,000,000. Under Subcontinental notation: 100 Crores = 1 Billion.