Question

which term of AP:53,48,43,.... is the first negative term​

Answer 1

Answer:

the first -ve term of that AP is 12th term.

Step-by-step explanation:

$a_{n}$ < 0

a + (n-1)d < 0

53 + (n-1)(-5) < 0

(n-1)(-5) < - 53

(n-1) > 53/5

n > 53/5 +1

n > 58/5

n > 11.6

therefore, n = 12

Hope it help :)