Question

which term of ap 4 7 10 is 31​

Answer 1

Step-by-step explanation:

10th term

Step-by-step explanation:

a=4

d=3

an=a+(n-1)d

31=4+(n-1)3

=4+3n-3

=1+3n

30=3n

n=10

Answer 2

Answer:

4,7,10,......,an=31.

a=4.

d=a2-a1=7-4=3.

an=31.

n=?.

an=a+(n-1)d.

31=4+(n-1)(3).

31=4+3n-3.

31=1+3n.

3n=31-1.

3n=30.

n=30/3.

n=10.

So, 10th term.