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4 , 9 , 14 , _______ , 249 ഈ ശ്രേണിയിലെ എത്രാം പദമാണ് 249 ?

A51

B49

C50

D55

Answer:

C. 50

Read Explanation:

ആദ്യ പദം = 4 പൊതുവ്യത്യാസം = 5 a + (n - 1) d = 249 4 + 5n - 5 = 249 5n = 250 n = 50


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