The question asks to identify the number pair that is different from the others based on some underlying pattern.

Odd One Out: Number Pair Analysis

We need to examine the relationship between the two numbers in each pair presented in the options.

Analyzing the Options:

• Option 1: 51-24
  • Sum of digits of 51: $5 + 1 = 6$
  • Sum of digits of 24: $2 + 4 = 6$
  • The sums are equal.
• Option 2: 32-41
  • Sum of digits of 32: $3 + 2 = 5$
  • Sum of digits of 41: $4 + 1 = 5$
  • The sums are equal.
• Option 3: 36-59
  • Sum of digits of 36: $3 + 6 = 9$
  • Sum of digits of 59: $5 + 9 = 14$
  • The sums are not equal.
• Option 4: 61-34
  • Sum of digits of 61: $6 + 1 = 7$
  • Sum of digits of 34: $3 + 4 = 7$
  • The sums are equal.

Identifying the Pattern

The pattern observed in options 1, 2, and 4 is that the sum of the digits of the first number in the pair is equal to the sum of the digits of the second number.

• Option 1: $6 = 6$
• Option 2: $5 = 5$
• Option 4: $7 = 7$

Option 3 (36-59) does not follow this pattern, as the sums of the digits are different ($9 \neq 14$).

Conclusion

Therefore, the pair 36-59 is the odd one out.