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ਅਗਲਾ ਨੰਬਰ ਲੱਭੋ: 2, 6, 12, 20, 30, ?

A40
B36
C42
D44
Answer & Solution
Correct answer: C. 42
**ਅੰਤਰ:** 4, 6, 8, 10 (2 ਵਧ ਰਿਹਾ ਹੈ)। ਅਗਲਾ ਅੰਤਰ = 12। ਇਸ ਲਈ 30 + 12 = 42। ਬਰਾਬਰ: n=1,2,3 ਲਈ n(n+1),... 2, 6, 12, 20, 30, 42 ਦੇਣਾ।
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