Question

in an A.P of 59 terms the sum of first 10 terms is 210 and sum of 15 terms 465. find the A.P​

Answer 1

Answer:

17,19,21,23,...133

Step by step explanation:

n=59

S 10=210

S 15=465

by expanding S 10 and S 15 we get,

2 a+4 d=42

2 a+14 d=62

by solving both equations,

a=17    d=2