Select the number from among the given options that can replace the question mark (?) in the following series.
- A79
- B123
- C76
- D120
Solution & Step-by-step Explanation
Let's analyze the differences between consecutive terms in the series: Notice that the differences are perfect cubes: Following this pattern, the next difference must be .
Let's verify with the last term using the next cube ():
This perfectly matches the final term. Thus, the missing number is 123.
Let's verify with the last term using the next cube ():
This perfectly matches the final term. Thus, the missing number is 123.