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ഒരു സമാന്തര ശ്രേണിയുടെ ബീജഗണിതരൂപം 2n + 3 ആണ്. 87 ഈ ശ്രേണിയിലെ എത്രാമത്തെ പദമാണ് ?

A30

B42

C44

D40

Answer:

B. 42


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