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Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.
625 : 5 :: 2560 : 8 :: 5000 : ?
9
12
10
15
Let’s break it down together:
- Look at the pattern between each pair:
- 625 : 5 – Take the cube root of 625. It’s not 5, but if you look deeper: 54 = 625. So, 625 is 5 raised to the power of 4.
- 2560 : 8 – What power of 8 gives 2560? 8³ = 512, and 84 = 4096. Not a direct power. But, 2560 divided by 8 is 320.
- Wait, let’s check if it’s division each time. 625 ÷ 5 = 125, which is 5³. 2560 ÷ 8 = 320.
- Hold up—let’s try division:
- 625 ÷ 5 = 125 ? 125 is 5³
- 2560 ÷ 8 = 320 ? 320 is 8² + 8° (but that feels forced)
- The clean pattern: each first number divided by the second equals the second number cubed. Is that it?
- 625 ÷ 5 = 125 = 5³
- 2560 ÷ 8 = 320 = 8³ = 512 (Nope, doesn’t match.)
- Let’s try the pattern of dividing the number until you get the second:
- 625 is 5 × 5 × 5 × 5 (that’s 54)
- 2560 ÷ 8 = 320, not a cube or square.
But hang on. Let’s just check the options for 5000.
- 5000 ÷ 10 = 500
- 5000 ÷ 12 ˜ 416.67
- 5000 ÷ 9 ˜ 555.56
- 5000 ÷ 15 ˜ 333.33
Still not matching the earlier pattern. But with the numbers given, none fit a clean cube or square, but dividing 625 by 5 gives 125, which is 5³. Similarly, do any options fit 5000 / x = x³?
- Try 10:
- 10³ = 1000. 5000 / 10 = 500 (No)
- Try 15:
- 15³ = 3375. 5000 / 15 = 333.33 (No)
- Try 12:
- 12³ = 1728. 5000 / 12 ˜ 416.67 (No)
- Try 9:
- 9³ = 729. 5000 / 9 ˜ 555.56 (No)
So, clearly, only the first pair fits nicely with the cube, the other don’t match. This suggests the pattern is the first number is the second raised to the fourth.
- 625 = 54
- Is 2560 = 84? 84 = 4096, so that doesn’t fit.
- Your answer, Option: 3 - 10, doesn’t fit any clean math here either.
- No pattern connects the numbers to 10 directly.
- The only proper pattern is with 625 and 5, where 625 = 54, but the rest don’t fit, so none of the options match the middle or last number by a clear rule.
- Given the options, none are clearly correct by any common mathematical relation, but if you must pick the closest pattern, Option 3 isn’t it.
By: Parvesh Mehta ProfileResourcesReport error
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