In the following question, select the related number from the given alternatives.
43 : 7 :: 23 : ?
The logic here is
4 + 3 = 7
Sum of the digits of the first number is equal to second number.
Similarly, Sum of the digits of the third number is equal to fourth number.
$$\therefore\ $$The fourth number = 2 + 3 = 5
Hence, the correct answer is Option D
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