Question

2 , 4 , 6 , 10 , 12 here is the A. P find numbee of terms??

Answer 1

Answer:

Here given that a = 2

d = 2

an = 12

We know that

an = a + (n-1)d

12 = 2 + (n-1)2

12 = 2 + 2n - 2

2n = 12

n = 6

Answer 2

Answer:

Here is given that

a=2

d=2

an=12

We all know that

an=a+(n-1)d

12=2+(n-1)2

12=2+2n-1

2n=12

n=6