Question

PLEASE SOLVE SOLVE QUESTIONS 4(xi,xii,xiii)

Answer 1

xi) the common difference is not the same
(a^2 - a) is not equal to (a^3 - a^2) ......so not in ap
xii) it can be written as √2,2√2,3√2,4√2 ......
comman difference = (2√2-√2)= √2
3√2-2√2 = √2
xiii) √3,√2.√3, 3
comman difference = √2,√3- √3 = √3(√2-1)
and 3 - √2.√3 = √3( √3-√2)
comman difference is not same so not in ap