Question

Do the irrational numbers √2,√8,√18,√32........form an A.P?if so find common difference?

Answer 1

Hi Friend 
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 a1=√2,
a2=√8= 2√2
a3=√18=3√2
a4=√32=4√2
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common difference a2-a1= 2√2-√2=√2
so d=√2

Answer 2

D is _/2 ..........................