Question
The second number in the given number pairs is obtained
by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs, except one. Find that odd number pair.Solution
The pattern followed in these pairs is: Add '4' to the cube of the first number to get the second number. Option A: 4 : 68 → 4³ + 4 = 64 + 4 = 68. Option B: 6 : 220 → 6³ + 4 = 216 + 4 = 220. Option C: 8 : 510 → 8³ + 4 = 512 + 4 = 516 ≠510. Option D: 9 : 733 → 9³ + 4 = 729 + 4 = 733.
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Rice crop prefer the pH of:
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Paddy and straw are an example of
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