allery10, x, 30 എന്നീ മൂന്ന് സംഖ്യകൾ ഗണിത പുരോഗതിയിലാണ്. x എന്താണ്?
A15
B25
C22
D20
Answer & Solution
Correct answer: D. 20
ഗണിത പുരോഗതിയിലെ മൂന്നിന്റെ മധ്യപദം പുറത്തുള്ള രണ്ടിന്റെ ശരാശരിയാണ്, (10 + 30) / 2 = 20.
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