The first and last terms of an A.P. are -3 and 145,respectively.if the common different is 4.find the,a.12th,b.25th term,c.the number if terms in the A.P.

Answer 1

a_n = -3 + 4(n-1) = 4n-1
So now you can find any term
Since (145+3)/4 = 37, you know there are 38 terms

Answer 2

Solution

Answer 3

first and the last term of an AP are -3 and 145 episode 250 common difference is 4 find the 1225 10 the number of terms in a tree