Question:
Find the wrong number in the series:
120, 99, 80, 65, 48, 35
श्रृंखला में गलत संख्या ज्ञात कीजिए:
120, 99, 80, 65, 48, 35
Options:
- 80
- 65
- 48
- 35
- 80
- 65
- 48
- 35
Correct Answer: b)
Explanation:
Pattern is \(n^2 – 1\):
\(11^2 – 1 = 120\)
\(10^2 – 1 = 99\)
\(9^2 – 1 = 80\)
\(8^2 – 1 = 63\) (not 65)
\(7^2 – 1 = 48\)
\(6^2 – 1 = 35\).
The wrong number is 65.
पैटर्न \(n^2 – 1\) है:
\(11^2 – 1 = 120\)
\(10^2 – 1 = 99\)
\(9^2 – 1 = 80\)
\(8^2 – 1 = 63\) (यहाँ 65 दिया गया है)
\(7^2 – 1 = 48\)
\(6^2 – 1 = 35\)। अतः गलत संख्या 65 है।