[" 9.Find "k" ,if the given value of "x" is the "k^(" th ")" term of the given AP "25,50,75,100,...,x=],[1000," (1) "]

Find n if the given value of x is the nth term of the given A.P (i)25,50,75,100,dots;x=1000

Find n if the given value of x is the nth term of the given A.P.25,50,75,100,...,;x=1000( ii) -1,-3,-5,-7,quad x=-151

Find n if the given value of x is the n t h term of the given A.P. 25 ,\ 50 ,\ 75 ,\ 100 ,\ . . . . , ;\ x=1000 (ii) -1,\ -3,\ -5,\ -7,\ ;\ \ x=-151

Find k, if the given value of x is the kth term of given AP.given by 2,-4,-10,-16,-22...;x=-448

Find the sum to n terms of the A.P., whose k^("th") term is 5k + 1.

Find the sum to n terms of the A.P., whose k^("th") term is 5k + 1.

Find the sum to n terms of the A.P., whose k^("th") term is 5k + 1.

Find the sum to n terms of the A.P., whose k^("th") term is 5k + 1.

Find the sum to n terms of the A.P., whose k^("th") term is 5k + 1.

Find the 12th,24th and nth term of the A.P. given by 9,13,17,21,25,