If `(b-c)/a+(a+c)/b+(a-b)/c=1`and `a-b+c!=0` then which of the following is correct?

If (1)/(b+c),1/(c+a),1/(a+b) are are in HP, then which of the following is/are correct? 1 a, b, care in AP 2. (b+c)^2 (c + a)^2, (a + b)^2 are in GP

Let a,b,c>0 such that a>b>c and a+c>2b .If In(a+c)+In(a-2b+c)=2In(a-c) then which of the following relation is(are) correct?

If a/(b+c)=b/(c+a)=c/(a+b) , then which one of the following statements is correct?

If vec a in the plane of vectors vec b\ a n d\ vec c then which of the following is correct? [ vec a\ vec b\ vec c]=0 b. "\" [ vec a\ vec b\ vec c]=1' c. "[ vec a\ vec b\ vec c]=3" d. "[ vec b\ vec c\ vec a]=1"

If A = {a, b, c} and R = {(a, a), (a, b), (b, b), (c. c),(c. a)} is a binary relation on A, then which one of the following is correct?

If A={a,b,c} and R={(a,a),(a,b),(b,c),(b,b),(c,c),(c,a)} is a binary relation of A, then which one of the following is correct?

If ={a,b,c} and R={(a,a),(a,b),(b,c),(b,b),(c,c),(c,a)} is a binary relation on A, then one of the following is correct?