Mathematics & Logic
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361
Two numbers are such that the ratio between them is 4:7. If each is increased by 4, the ratio becomes 3:5. Find the difference between the numbers.
Medium
Mathematics & Logic
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362
A mixture of 40 liters of milk and water contains 10% water. How much water should be added to make it 20% in the new mixture?
Medium
Mathematics & Logic
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363
If A:B = 1/2 : 3/8, B:C = 1/3 : 5/9 and C:D = 5/6 : 3/4, then A:B:C:D is:
Hard
Mathematics & Logic
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364
What is the value of pi rounded to two decimal places?
Easy
Mathematics & Logic
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365
Which is the smallest two-digit prime number?
Easy
Mathematics & Logic
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366
Which month has the shortest number of days in a leap year?
Easy
General Knowledge, Mathematics & Logic
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367
What is the unit digit of 7^2?
Easy
Mathematics & Logic
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368
Which is the smallest prime number?
Easy
Mathematics & Logic
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369
Three numbers are in the ratio 3 : 2 : 5 and the sum of their squares is 1862. Find the smallest number.
Medium
Mathematics & Logic
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370
Two numbers are in the ratio 5:6. If 8 is added to each number, the ratio becomes 7:8. Find the product of the numbers.
Medium
Mathematics & Logic
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371
The ratio of copper and zinc in an alloy is 5 : 2. If 1.5 kg of zinc is added to 17.5 kg of the alloy, find the new ratio of copper and zinc.
Medium
Mathematics & Logic
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372
If a/2 = b/3 = c/4, then find A:B:C.
Easy
Mathematics & Logic
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373
Find the sub-duplicate ratio of 16:25.
Easy
Mathematics & Logic
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374
If the ratio of the volumes of two spheres is 8:27, find the ratio of their surface areas.
Hard
Mathematics & Logic
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375
If x:y = 1/2 : 1/3 and y:z = 1/4 : 1/5, find x:y:z.
Hard
Mathematics & Logic
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