Question

If the first and fifth term's sum is 10, then the third term of an arithmetic progression is ______​

Answer 1

Answer:

a3=5

Step-by-step explanation:

GIVEN: a1+a5=10

a+a5=10

a5= a+(n-1)d

= a+(5-1)d

= a+4d

a+a+4d=10

2a+4d=10. a3=a+2d

a+2d=5 a3=5.

Divide every term by 2