1.

Find the first terms of an A.P., whose 3rd term is 3 and 8th term is 33.

Answer»

Answer:

a3 = 3

a+2D = 3 -------- EQUATION 1

a8 = 33

a+ 7D = 33 ------- equation 2

a + 7d = 33

a+ 2d = 3

----------------

5d = 30

d= 30/5

d= 6

substitute d=6 in equation 1

a+2d= 3

a+ 2(6)= 3

a+12= 3

a= 3-12

a= -9



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