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पुढील संख्या शोधा: 2, 6, 12, 20, 30, ?

A40
B36
C42
D44
Answer & Solution
Correct answer: C. 42
**फरक:** 4, 6, 8, 10 (2 ने वाढणारा). पुढील फरक = 12. म्हणून 30 + 12 = 42. सममूल्य: n = 1, 2, 3,... साठी n(n+1) ज्यावरून 2, 6, 12, 20, 30, 42 मिळतात.
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