Mathematics & Logic
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301
Find the fourth proportional to 4, 9, 12.
Easy
Mathematics & Logic
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302
The mean proportional between 0.08 and 0.18 is:
Easy
Mathematics & Logic
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303
If A is 25% more than B and B is 20% less than C, then A : C is:
Medium
Mathematics & Logic
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304
What is the third proportional to (x/y + y/x) and √(x² + y²)?
Hard
Mathematics & Logic
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305
If a:b = 2:3 and b:c = 4:5, then a²:b²:bc is:
Hard
Mathematics & Logic
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306
A sum of ₹4,650 is divided among A, B, and C such that A's share is 2/3 of B's share and B's share is 3/4 of C's share. Find A's share.
Medium
Mathematics & Logic
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307
Two numbers are in the ratio 3:5. If 9 is subtracted from each, the new ratio is 12:23. Find the smaller number.
Medium
Mathematics & Logic
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308
If x:y = 3:4, what is the value of (4x + 5y) : (5x - 2y)?
Easy
Mathematics & Logic
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309
If (x + y) : (x - y) = 4 : 1, then (x² + y²) : (x² - y²) is:
Hard
Mathematics & Logic
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310
The ratio of the number of sides of two regular polygons is 1:2, and the ratio of their interior angles is 3:4. Find the number of sides of these polygons.
Hard
Mathematics & Logic, Indian Polity
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311
If x, 12, 18, and 24 are in proportion, find the value of x.
Easy
Mathematics & Logic
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312
The ratio of the radius of two circles is 3 : 5. Find the ratio of their areas.
Easy
Mathematics & Logic, Indian Polity
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313
Find the duplicate ratio of 3 : 4 and the triplicate ratio of 2 : 3.
Easy
Mathematics & Logic
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314
If (a + b) : (a - b) = 15 : 1, then the value of (a² + b²) : (a² - b²) is:
Hard
Mathematics & Logic
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315
A bag contains ₹1, ₹2 and ₹5 coins in the ratio 4 : 5 : 6. If the total money in the bag is ₹1,320, find the number of ₹5 coins.
Medium
Mathematics & Logic
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