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Solutions
The pattern followed in the given options is:
√(First term + 1) = Second term
Let's apply the pattern on the options:
Option 1) 48 ∶ 7
√(48 + 1) = 7
√49 = 7
7 = 7
Option 2) 25 ∶ 8
√(25 + 1) = 8
√26 = 8
5.09 ≠ 8
Option 3) 15 ∶ 4
√(15 + 1) = 4
√16 = 4
4 = 4
Option 4) 8 ∶ 3
√(8 + 1) = 3
√9 = 3
3 = 3
So, 25:8 is the odd one.
Hence the correct answer is option 2)