RRB ટેકનિશિયન 2013 પ્રશ્ન 90
પ્રશ્ન: 2, 6, 12, 20, …., 42, 56, 72, 90
વિકલ્પો:
A) 20
B) 21
C) 30
D) 12
Show Answer
જવાબ:
સાચો જવાબ: C
ઉકેલ:
- શ્રેણી 2 વડે વધતા તફાવત સાથે આગળ વધે છે, એટલે કે, 4, 6, 8, 10, 12……. તેથી, ગુમ થયેલ સંખ્યા 30 હશે.
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