Question

Is 144 a term of the A.P 3, 7, 11, .......? Justify your answer

Answer 1

Step-by-step explanation:

An=a+(n-1)d

Let An= 144

144=3+(n-1)4

144/4=3+(n-1)

36=3+(n-1)

36-3=n-1

33=n-1

32=n

Since 32 is a Positive interger Therefore 144 is a term of this Ap.