Question : The odd term in the sequence 0, 7, 26, 63, 124, 217 is:
Option 1: 217
Option 2: 7
Option 3: 26
Option 4: 63
Correct Answer: 217
Solution :
Given: The sequence 0, 7, 26, 63, 124, 217.
The pattern formed here is,
1
3
– 1 = 1 – 1 = 0
2
3
– 1 = 8 – 1 = 7
3
3
– 1 = 27 – 1 = 26
4
3
– 1 = 64 – 1 = 63
5
3
– 1 = 125 – 1 = 124
6
3
– 1 = 216 – 1 = 215
Since, 217 is the wrong term as 217 $\neq$215. So, 215 is the correct term.
Hence, the correct answer is 217.
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