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Find the next number: 2, 6, 12, 20, 30, ?
Answer & Solution
Correct answer: D.
1. Differences: 4, 6, 8, 10. Each difference grows by 2.
2. Next difference = 12. 30 + 12 = 42.
3. Pattern check: nth term = n(n+1) for n=1,2,3... → 2,6,12,20,30,42. ✓
_Source: TSICET 2024 PYQ Q.32 (Shift 1, Number Series)_
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