Question:
What is the next term of an A.P. √7,√28,√63,........
Answer:
Given AP is: √7, √28, √63,.......
= √7, 2√7, 3√7,......
Next term = 4th term = a + 3d
= √7 + 3*√7 (first term a =√7 and common difference d = 2*√7-√7 = √7)
= 4*√7
= √(7*4*4)
= √112
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