Mathematics & Logic
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481
What is the Duplicate Ratio of 4:5?
Easy
Mathematics & Logic
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482
What is the 'Mean Proportional' between 4 and 9?
Medium
Mathematics & Logic
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483
Three numbers are in the ratio 1:2:3. If the sum of their squares is 126, find the numbers.
Hard
Mathematics & Logic
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484
A bag contains coins of 50p, 25p, and 10p in the ratio 5:9:4, amounting to ₹206. Find the number of 50p coins.
Hard
Mathematics & Logic
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485
What is the sum of the first 20 natural numbers?
Medium
Mathematics & Logic
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486
What is the third proportion to 9 and 12?
Medium
Mathematics & Logic
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487
What is the cost of 8 chairs if 3 chairs cost ₹2,100?
Easy
Mathematics & Logic
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488
If A:B = 2:3 and B:C = 4:5, find the ratio A:B:C.
Medium
Mathematics & Logic
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489
A mixture contains milk and water in the ratio 4:3. If 5 liters of water is added, the ratio becomes 4:5. How much milk is in the mixture?
Hard
Mathematics & Logic
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490
In a class, the ratio of boys to girls is 7:5. If there are 120 students in total, how many girls are there?
Easy
Mathematics & Logic
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491
What is the cost of 5 items if 12 items cost ₹180?
Easy
Mathematics & Logic
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492
What is the selling price of an item cost ₹500 with a profit of 20%?
Medium
Mathematics & Logic
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493
If the ratio of the areas of two squares is 16:25, what is the ratio of their perimeters?
Medium
Mathematics & Logic
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494
What is the ratio of ₹5.00 to 50 paise?
Medium
Mathematics & Logic
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495
The average of five numbers is 20. If each number is multiplied by 3, what will be the new average?
Medium
Mathematics & Logic
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