Question

In an arithmetic progression , if d = -2 , n= 12 , an = 310 , then find a...

please tell me​

Answer 1

Answer:

a= 332

Explanation:

given that

d = -2 , n= 12 , an = 310 , we have to find a= ?

putting the value

an= a+(n-1) d

310= a + (12-1)(-2)

310= a + 11(-2)

310= a-22

310+22=a

332= a

Answer 2

Answer:

d= -2

n= 12

an= 310

an=a+(n-1)d

310 = a+(12-1)(-2)

310 = a+(11)(-2)

310 = a-22

a = 310+22

a = 332