Question

which term of ap:13,19,25,31​

Answer 1

Answer:

the terms of the AP should be an integer, not a fraction

Answer 2

Step-by-step explanation:

AP : 13, 19, 25, 31, ........

first term, a = 13

common difference, d = a2 – a1

d = 19 – 13

d = 6

an = 1001

an = a + ( n – 1 )×d

1001 = 13 + ( n – 1 ) × 6

1001 = 13 + 6n – 6

1001 – 13 + 6 = 6n

994 = 6n

994 / 6 = n

n = 165.667

Since n is coming out to be fraction therefore 1001 is not a term of the Above AP.