Question

for what value of n the nth term of the following two ap s are equal 1,7,13...........and 69,68,67 is the same ? PLEASE SOLVE ASAP !!!!!!!!!!!!!

Answer 1

an = a + (n-1)d

=> a1 + (n-1)d1 = a2 + (n-1)d2

=> 1 + (n-1)6 = 69 + (n-1)(-1)

=> 6n - 6 = 68 - n + 1

=> 7n = 69 + 6

=> 7n = 75

=> n = 75/7

But there is no such term like 75/7. Thus, they don't have any term as equal.