Select the number-pair that is different from the other three?
Select the number-pair that is different from the other three?
A15-120
B16-416
C12-648
D6-38
All DiscussionsClick here to write answer
correct answer is: option d : 6-38
Explanation: The logic in all other pairs except option d is that the second number is obtained by multiplying the first number by a value that is the square of the first number minus a certain constant. Let's analyze each option:
- Option a: 15-120. Here, 15 * (15 - 7) = 15 * 8 = 120.
- Option b: 16-416. Here, 16 * (16 + 10) = 16 * 26 = 416. Alternatively , we can express it as 16*(16 + 10) = 416
- Option c: 12-648. Here, 12 * (12 * 4.5) = 648. Alternatively , we can express it as 12 * (12 + 42) = 648, where this doesn't work. But if consider 12 * (12 * 4.5) = 648 or 12 * (12 x 4.5)
- Option d: 6-38. Here, we need to find a similar relationship, and no such simple multiplication holds true as 6 * (6+x) = 38. Thus, it doesn't follow same pattern as the others. Thus, this option is the different one.
Post your answers here:
Post
