Final answer:
The series shows a pattern of one term being doubled and the following term being divided by incremental factors. The number 900 is repeated, indicating a possible incorrect term. After establishing a division pattern for the subsequent terms, it looks like the term 900 appearing twice is the anomaly.
Step-by-step explanation:
The question asks to find the wrong term in the series 450, 900, 900, 360, 300, 120, 40. We should look for a pattern to detect the wrong term in the series. At a quick glance, we see that the number 900 is repeated consecutively, which is uncommon in such series.
However, if we consider 450 being doubled, we get 900. If we continue this pattern by halving 900, we should get 450 again, but instead, we have another 900. From this point onwards, each term seems to be divided by a certain factor to get the next term (900/2.5=360, 360/1.2=300, 300/2.5=120, 120/3=40).
The wrong term in the given series is: 900
To find the wrong term, we need to observe the pattern in the series. The first term is multiplied by 2 to get the second term (450 * 2 = 900). However, the third term is the same as the second term, which does not follow the pattern. Therefore, the wrong term is 900.