Find the $6^{th}$ term from the end of the $AP: 17, 14, 11, \dots \dots , -40.$

Is $184$ a term of the $AP: 3, 7, 11, 15, \dots .$

Is $-150$ a term of the $AP: 11, 8, 5, 2, \dots \dots$

Which term of the $AP: 121, 117, 113, \dots .$ is its first negative term?

Which term of the $AP:$$20, 19 \frac{1}{4} , 18 \frac{1}{2} , 17 \frac{3}{4} ,.....$ is the first negative term?

The $4^{th}$ term of an $AP$ is zero. Prove that its ${25}^{th}$ term is triple its ${11}^{th}$ term.

The $4$^th term of an AP is $11$. The sum of the $5$^th and $7$^th terms of this AP is $34$. Find its common difference.