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40, 20, 20 , 30, 60, X ഇവ ഒരു ശ്രേണിയിലെ പദങ്ങളാണെങ്കിൽ X-ന്ടെ മൂല്യം എത്രയാണ് ?

A120

B150

C90

D180

Answer:

B. 150

Read Explanation:

40, 20, 20 , 30, 60, X 40 x 1/2 = 20 20 x 2/2 = 20 20 x 3/2 = 30 30 x 4/2 = 60 60 x 5/2 = 150 X=150


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