The common difference of the AP, x – y, x, x + y, is …………

If the $n^{th}n^\{th\}$ term of an A.P. is $a_{n}a\_n$ = 3 + 2n, then the common difference d is ……………

Common difference of an Arithmetic Progression, whose 3rd term is 5 and 7th term is 9, is

If $n^{th}n^\{th\}$ term of a sequence is $\frac{3n-4}{7}\backslash frac\{3n-4\}\{7\}$ then $6^{th}6^\{th\}$ term =

The famous mathematician associated with finding the sum of the first 100 natural numbers is

Which of the following is an A.P ?

${10}^{th}10^\{th\}$ term of 4 + 6 + 8 + ………….. is

${27}^{th}27^\{th\}$term of 5, 14, 23, ……………… is

${12}^{th}12^\{th\}$ term of the sequence 5, 14, 23, ……………. is

${18}^{th}18^\{th\}$ term of 13, 8, 3, -2, ……………….. is