Practise 100 Most Repeated MCQs of Math MCQs in Maths. Attempt multiple-choice questions, check answers and revise related subtopics.
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Answer: 80
Explanation 4/5*100 =400/5 =80
Answer: 150%
Explanation We know that th CP of 1 toffee =₹1/5 SP of 1 toffee = ₹1/2 Since SP is more than CP it's Gain Gain=SP−CP =1/2−1/5 =3/10 ∴Gain%=(Gain×100)/CP =((3/10)×100)/(1/5) =150%
Answer: 144
Explanation Percent Value: 60% Number: 240 60% of 240... ... is equivalent to multiplying them: 60% × 240 = 144
Answer: x ∝ z
Explanation Given: x ∝ 1/y y ∝ 1/z We can rewrite these proportions as: x = k₁/y (where k₁ is a constant) y = k₂/z (where k₂ is a constant) Substitute the expression for y into the first equation: x = k₁/(k₂/z) Simplify: x = k₁z/k₂ x ∝ z
Answer: 190
Explanation The number of ways to choose 2 students from a class of 20 students is represented by the combination formula: C(20,2) = 20! / (2! x (20-2)!) where ! denotes the factorial function. Simplifying the formula, we get: C(20,2) = (20 x 19) / 2 = 190 So, there are 190 ways to choose 2 students from a class of 20 students.
Answer: 9
Explanation Mean = numbers of multiples/ sum of multiples of first five of 3 The average of the first five multiples of 3 = 3 + 6 +9 + 12 + 15 / 5 = 45/ 5 = 9 Last verified on 15-02-2026
کراس ہیئرز اور مقصد کے نظری مرکز کے چوراہے سے گزرنے والی خیالی لکیر کو کیا کہا جاتا ہے۔
Answer: Line of collimation
Explanation
Answer: 35/36
Explanation To find the average, we need to first convert each fraction to a decimal: 5/6 = 0.83 4/3 = 1.33 3/4 = 0.75 Then, add the decimals and divide by the number of values: 0.83 + 1.33 + 0.75 = 2.91 2.91 ÷ 3 = 0.97 Now, convert the average back to a fraction: 0.97 ≈ 35/36
Answer: 35 km/hr
Explanation Speed with which the car travels = 5/7th of its actual speed. Distance covered = 42 km Time taken to cover the above distance = 1 hour 40 minutes 48 seconds = 1 hr 40 (4/5) min = 126/75 hrs To find: The actual speed of the car = ? Solution: Let the actual speed of the car be x km/hr Then, (5/7)x *(126/75) = 42 x = (42 * 7 * 75)/(5 * 126) x = 35 km/hr
Answer: 50.5
Explanation The sum of all odd numbers between 1 and 100 is 50^2=2500 The sum of all even numbers between 2 and 100 is 50^2+50=2550 The total of 1 to 100 natural numbers is 2500+2550 5050 The average of the first 100 numbers is 5050 / 100 = 50.50 ND27-5-2023
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