Check whether the given list of numbers forms an $\mathrm{AP}$ or not? If they form an $\mathrm{AP}$, find the common difference $d$ and write the next three terms.

$-1.2,-3.2,-5.2,-7.2,\dots .....$

Check whether the given list of numbers forms an $\mathrm{AP}$ or not? If they form an $\mathrm{AP}$, find the common difference $d$ and write the next three terms.

$-10,-6,-2,2,\dots ....$

Check whether the given list of numbers forms an $\mathrm{AP}$ or not? If they form an $\mathrm{AP}$, find the common difference $d$ and write the next three terms.

$3, 3+\sqrt{2}, 3+2\sqrt{2}, 3+3\sqrt{2},...\dots$

Check whether the given list of numbers forms an $\mathrm{AP}$ or not? If they form an $\mathrm{AP}$, find the common difference $d$ and write the next three terms.

$0.2, 0.22, 0.222, 0.2222,\dots .....$

Check whether the given list of numbers form an $\mathrm{AP}$ or not? If they form an $\mathrm{AP}$, find the common difference $d$ and write the next three terms.

$0,-4,-8,-12,\dots ....$

Check whether the given list of numbers form an $\mathrm{AP}$ or not? If they form an $\mathrm{AP}$, find the common difference $d$ and write the next three terms.

$-\frac{1}{2},-\frac{1}{2},-\frac{1}{2},-\frac{1}{2},...\dots$

Check whether the given list of numbers form an $\mathrm{AP}$ or not? If they form an $\mathrm{AP}$, find the common difference $d$ and write the next three terms.

$1,3,9,27,...\dots$

Check whether the given list of numbers form an $\mathrm{AP}$ or not? If they form an $\mathrm{AP}$, find the common difference $d$ and write the next three terms.

$a,2a,3a,4a,...\dots$

Check whether the given list of numbers forms $\mathrm{AP}$ or not? If they form an $\mathrm{AP}$, find the common difference $d$ and write the next three terms.

$a, a^2, a^3, a^4,\dots ....$