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: 2^3 ×3^2
Explanation The prime factorization of 72 involves dividing it by its smallest prime factor repeatedly: 72 ÷ 2 = 36 72 div 2 = 36 36 ÷ 2 = 18 36 div 2 = 18 18 ÷ 2 = 9 18 div 2 = 9 9 ÷ 3 = 3 9 div 3 = 3 3 ÷ 3 = 1 3 div 3 = 1 So, 72 = 2 3 × 3 2
Answer: 240
Explanation Given ratio: 50 paisa:1 rupee:2 rupee = 2:5:8 Let's assume the number of coins of each denomination are: 50 paisa = 2x 1 rupee = 5x 2 rupee = 8x Total amount = Rs. 352 The value of coins is: 50 paisa coins = 2x * 0.50 = Rs. x 1 rupee coins = 5x * 1.00 = Rs. 5x 2 rupee coins = 8x * 2.00 = Rs. 16x Adding these values, we get: x + 5x + 16x = 352 Combine like terms: 22x = 352 Divide by 22: x = 16 Now, find the total number of coins: 50 paisa coins = 2x = 2(16) = 32 1 rupee coins = 5x = 5(16) = 80 2 rupee coins = 8x = 8(16) = 128 Total number of coins = 32 + 80 + 128 = 240 So, the correct answer is: 240
Answer: 39
Explanation Let the average after 17th innings = x Then average after 16th innings = (x – 3) Therefore 16 × (x – 3) + 87 = 17x Therefore x = 39
Answer: 5
Explanation If 1, 9, x, and 45 are in proportion, we can set up the proportion as: 1 : 9 :: x : 45 This can be written as: 1/9 = x/45 Cross-multiplying: 45 = 9x x = 45/9 x = 5 Last verified on 09-02-2026
اگر دائیں گول شنک کی شکل والی عمارت کا رداس 8m اور ترچھی اونچائی 17m ہے، تو اس کا حجم کیا ہے؟
Answer: 1005 m³
Explanation
Answer: 35
Explanation Average = sum of all values/total number of values Sum of all values = total numb of values x Average =24*10= 240 =25*11= 275 Age of teacher=275-240= 35
Answer: 10
Explanation Given: a/b = 3/5 ... (1) When 2 is added to both numbers, the ratio becomes 2/3, so we can write: (a+2)/(b+2) = 2/3 ... (2) Cross-multiplying (2), we get: 3(a+2) = 2(b+2) Expanding and simplifying, we get: 3a + 6 = 2b + 4 Subtracting 6 from both sides gives: 3a = 2b - 2 Now, substituting (1) in the above equation, we get: 3(3/5)b = 2b - 2 Multiplying both sides by 5, we get: 9b = 10b - 10 Subtracting 10b from both sides gives: -b = -10 Dividing both sides by -1, we get: b = 10 So, the correct answer is: 10
Answer: 81
Explanation 6 (+5)→ 11 11 (+10)→ 21 21 (+15)→ 36 36 (+20)→ 56 56 (+25) → 81
Answer: {x|-2 < x < 7}
Explanation The expression that represents "a number greater than -2 but less than 7" is: {x | -2 < x < 7} This notation correctly indicates x is between -2 and 7, excluding both -2 and 7.
Answer: 30
Explanation Identify the consonants and vowels in the word TRIANGLE: Consonants: T, R, N, G, L Vowels: I, A, E We need to select 3 consonants from the 5 consonants: Number of ways to select 3 consonants = 5C3 = 5! / (3! x 2!) = 10 We need to select 2 vowels from the 3 vowels: Number of ways to select 2 vowels = 3C2 = 3! / (2! x 1!) = 3 Now, we need to find the total number of ways to select 3 consonants and 2 vowels: Total number of ways = Number of ways to select 3 consonants x Number of ways to select 2 vowels = 10 x 3 = 30 So, the correct answer is: 30
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