If a number is divided by 5, the remainder is 3. What is the remainder when squared? A. 1 B. 2 C. 3 D. 4 Explanation: 3² = 9 → remainder = 4.
If cost price is Rs. 800 and selling price is Rs. 1000, profit percent is ____. A. 20% B. 25% C. 30% D. 15% Explanation: Profit = 200 → 200/800 ×100 = 25%.
If a train travels 60 km in 1 hour, how far does it travel in 20 minutes? A. 15 km B. 20 km C. 25 km D. 30 km Explanation: 20 min = 1/3 hr → distance = 20 km.
If 5 workers earn Rs. 500 in 10 days, 10 workers will earn ____.in 10 days? A. Rs. 500 B. Rs. 1000 C. Rs. 1500 D. Rs. 2000 Explanation: Double workers → double earnings.
If 12 men can complete a work in 8 days, 16 men will complete in ____. A. 6 days B. 8 days C. 10 days D. 12 days Explanation: Inverse proportion → (12×8)/16 = 6.
If x:y = 2:3 and y:z = 4:5, then x:z = ____. A. 2:5 B. 8:15 C. 3:5 D. 4:5 Explanation: Equalize y → ratio becomes 8:15.
The sum of squares of first 5 natural numbers is ____. A. 50 B. 55 C. 60 D. 65 Explanation: The formula gives 55.
If the length of a rectangle is doubled and breadth halved, the area becomes ____. A. Double B. Half C. Same D. Four times Explanation: (2L × B/2) = LB.
A and B can do the work in 12 days, B and C in 15 days, and A and C in 20 days. All together can do it in ____. A. 10 days B. 8 days C. 12 days D. 15 days Explanation: Combined rate = (sum of pair rates)/2.
A and B can do the work in 10 days. B alone can do it in 15 days. A alone will take ____. A. 20 days B. 25 days C. 30 days D. 35 days Explanation: A’s rate = 1/10 − 1/15 = 1/30.