alleryત્રણ સંખ્યાઓ 10, x, 30 સમાંતર શ્રેણીમાં છે. x શું છે?
A15
B25
C22
D20
Answer & Solution
Correct answer: D. 20
સમાંતર શ્રેણીમાં ત્રણ પદો પૈકી વચ્ચેનું પદ એ બહારના બે પદોની સરેરાશ હોય છે, (10 + 30) / 2 = 20.
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