Question

which term of arithmetic sequence 24,23 1/4, 22 1/2,21 3/4 ,_is 3

Answer 1

a=24

d=-0.75

nth term = a + (n-1) d

3= 24 + (n-1)-0.75

-21= (n-1)-0.75

-21= -0.75n + 0.75

-21.75 = -0.75n

n=29