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Select the option in which the numbers share the same relationship as that shared by the given pairs of numbers. 100 : 90 70 : 60 (NOTE: Operations should be performed on the whole number, without breaking down the numbers into its constituent digits. E.g. 13- Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed.)
130 : 110
150 : 145
130 : 120
90 : 70
130 : 120
Observe the common difference between the numbers in the pairs; the constant difference here is 10.
Observe the common difference between the numbers in the pairs; the constant difference here is 10.
Analyze the given pairs
The given pairs are 100 : 90 and 70 : 60. Calculating the difference: 100 - 90 = 10 and 70 - 60 = 10. Both pairs maintain a constant difference of 10.
Evaluate the options
Check each option for a difference of 10: A) 130 - 110 = 20, B) 150 - 145 = 5, C) 130 - 120 = 10, D) 90 - 70 = 20. Only option C matches the pattern of a difference of 10.
A: Difference is 20, which does not match the required difference of 10. B: Difference is 5, which does not match the required difference of 10. D: Difference is 20, which does not match the required difference of 10.
C is correct because it follows the established logical pattern where the second number is exactly 10 units less than the first number (130 - 120 = 10).
In number analogy questions, always check for additive or subtractive constants first before considering squares, cubes, or prime number properties.