Find the sum of the following
`3, 7, 11, …` upto to 40 terms.

Find the sum of the following 102, 97, 92, … upto to 27 terms.

Find the sum of the following series: 1+4+7+10+… to 40 terms

find the sum of the following A.Ps 7,11,15,….,12 terms, n terms.

Find the sum of the following AP is up to the specified term 4+7+10….. Upto 112th term.

Find the sum of the following series up to the specified term 1 + 3 + 5 + 7….. upto 30th term.

Find the sum of the following series up to the specified term -8-3+2+…..upto 20th term.

Find the sum of the following series up to the specified term (x-y) + (2x-3y) + (3x-5y)+ ….. upto nth term.

Find the sum of the following AP up to the specified term 20+ 18+ 16….. Upto 12th term.

Find the sum of the following AP up to the specified term 2 + 6 + 10 + …...upto 50th term.