Defence Exams
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Q. A certain disease has a recovery rate of 85%. If 200 patients are treated, how many are expected to recover? (2022)
Q. A certain disease has a recovery rate of 90%. If 50 patients are treated, how many are expected to recover? (2023)
Q. A certain event is celebrated every 4 years. If it was last celebrated in 2016, in which year will it next be celebrated? (2020)
Q. A chord of a circle is 8 cm long and is 3 cm away from the center. What is the radius of the circle? (2021)
Q. A circle has a circumference of 31.4 cm. What is its radius? (2021)
Q. A circle has a radius of 7 cm. What is its circumference? (2023)
Q. A class has 30 students with an average score of 75. If 5 new students join with an average score of 80, what is the new average? (2023)
Q. A class has 30 students with an average score of 75. If a new student joins and the average becomes 76, what is the score of the new student? (2023)
Q. A class has an average score of 75. If one student scored 90, what is the average score of the remaining students if there are 20 students in total?
Q. A class has the following scores in a test: 56, 78, 78, 82, 82, 82, 90, 91. What is the mode of the scores?
Q. A class of 30 students has an average score of 75. If one student scores 90, what will be the new average? (2022)
Q. A class of students scored the following marks: 45, 50, 50, 55, 60, 60, 60, 70, 75. What is the mode of the scores?
Q. A class of students scored the following marks: 45, 55, 55, 60, 60, 60, 70, 75, 80. What is the mode of the scores?
Q. A class of students scored the following marks: 45, 55, 55, 60, 60, 60, 70, 75. What is the mode of the scores?
Q. A class of students scored the following marks: 45, 55, 55, 60, 70, 70, 70, 80, 90. What is the mode of the scores?
Q. A coin is tossed three times. What is the probability of getting at least one head?
Q. A college awards $1000 to the best student. If the award is split equally among 4 students, how much does each student receive? (2019)
Q. A college awards a scholarship of $5000 to a student. If the student has to pay 15% tax on the scholarship, how much does he receive after tax?
Q. A college awards a total of $5000 in scholarships. If 60% goes to academic scholarships and the rest to sports, how much is awarded for sports? (2023)
Q. A college awards a total of $5000 in scholarships. If 60% goes to the first place, how much does the first place winner receive? (2000)
Q. A college awards a trophy to the top 10% of students. If there are 200 students, how many students receive the trophy?
Q. A company reported a revenue of $1.5 million and expenses of $1 million. What is the net profit? (2023)
Q. A concave mirror has a focal length of 20 cm. What is the distance of the object from the mirror if the image formed is at a distance of 30 cm from the mirror? (2021)
Q. A concave mirror has a focal length of 20 cm. What is the radius of curvature of the mirror? (2021)
Q. A convex lens has a focal length of 20 cm. If an object is placed 60 cm from the lens, what is the position of the image?
Q. A convex lens has a focal length of 25 cm. What is the power of the lens? (2021)
Q. A convoy of military trucks travels 240 km in 4 hours. What is the average speed of the convoy? (2023)
Q. A convoy of trucks travels 240 km in 4 hours. What is the average speed of the convoy? (2023)
Q. A convoy of trucks travels 300 km at an average speed of 75 km/h. How long does the journey take? (2021)
Q. A country aims to reduce its carbon emissions by 20% over 5 years. If the current emissions are 1,000 tons, what will be the target emissions after 5 years?
