आरआरबी टेक्निशियन 2013 प्रश्न 90
प्रश्न: 2, 6, 12, 20, …., 42, 56, 72, 90
पर्याय:
A) 20
B) 21
C) 30
D) 12
Show Answer
उत्तर:
योग्य उत्तर: C
उपाय:
- मालिका २ ने वाढत्या फरकाने पुढे जाते, म्हणजेच 4, 6, 8, 10, 12……. त्यामुळे, गहाळ संख्या 30 असेल.
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