Question 11 MarkThe sum of $n$ terms of an AP is $2 n^2+5 n$ then its $4^{\text {th }}$ terms is $(19,20,21)$Answer$19$View full question & answer→
Question 21 MarkThe sum of first $16$ terms of an AP $10,6,2 \ldots$ is ...... $(320,230,-320)$Answer$-320$View full question & answer→
Question 31 MarkAn AP whose first term is $-2$ and its common difference is $-2$ then its terms are is ............ $(-8,-6,-4,-2 ;-2,-4,-6,-8 ; 2,4,6,8)$Answer$-2,-4,-6,-8$View full question & answer→
Question 41 MarkIf $\frac{1}{x+2}, \frac{1}{x+3}+\frac{1}{x+5}$ are the consecutive term of an AP then $x=$ ............ . $(-1,1,0)$Answer$1$View full question & answer→
Question 51 Mark$5,2,-1 \ldots-49$ is an arithmetic progression so it has ............. terms. $(19,20,21)$Answer$19$View full question & answer→
Question 61 MarkIf $-5-\frac{5}{2}, 0, \frac{5}{2}$ are the consecutive terms of an AP then its $25^{\text {th }}$ term is $(65,50,55)$Answer$\frac{5}{2}$View full question & answer→
Question 71 Mark$\quad 2 k+1,3 k+3$ and $5 k-1$ are the consecutive terms of an AP then $k=\ldots \ldots \ldots . . . .(8,6,2)$Answer$6$View full question & answer→
Question 81 MarkFor any arithmetic progression, $S _{ n }-2 S _{ n -1}+ S _{ n -2}=\ldots \ldots \ldots .(a, d, n)$Answer$d$View full question & answer→
Question 91 Mark$k^{\text {th }}$ term of on AP $1,5,9,13$ is $45$ then find the value of $k......(21,11,12)$Answer$12$View full question & answer→
Question 101 MarkThe sum of $2 n$ terms of an AP $2,5,8 \ldots$ is $S _1$ and The sum of $n$ terms is $S _2$ If $S _1= S _2$ then $n=\ldots \ldots$ $(101,11,21)$Answer$11$View full question & answer→