Question

If a, b, c, d e R* and a, b, c, d are in H.P, then
1) a + d > b+_c
2) a +b>c+d
3) a +c> b+d
4) b+c> a+d
If you answer this question I will mark you as brainlist​

Answer 1

Step-by-step explanation:

Given 

2b=a+c and

c2=b1+d1

⇒c2−a+c2=d1

⇒2(c(a+c)a+c−c)=d1

⇒cba=d1

∴ad=bc

Plz mark it as brainliest answer