Select the option that will correctly replace the question mark (?) in the series.
0, 8, 24, 48, ?
- A81
- B87
- C89
- D80
Solution & Step-by-step Explanation
Let us check the differences between consecutive numbers:
8−0=8
24−8=16
48−24=24
The differences are consecutive multiples of 8: 8,16,24.
The next difference should be 32.
Therefore, the missing number is:
48+32=80
Alternative logic:
1
2
−1=0
3
2
−1=8
5
2
−1=24
7
2
−1=48
9
2
−1=80
Both methods confirm the answer is 80.
8−0=8
24−8=16
48−24=24
The differences are consecutive multiples of 8: 8,16,24.
The next difference should be 32.
Therefore, the missing number is:
48+32=80
Alternative logic:
1
2
−1=0
3
2
−1=8
5
2
−1=24
7
2
−1=48
9
2
−1=80
Both methods confirm the answer is 80.