[" 79.If "a,b,c" three positive number in HP,then "],[" which of the following is true? "]

If a, b are distinct positive real numbers, then which one of the following is true?

If a, b and c are three real numbers, then which of the following is NOT true ?

If a, b, c are positive real numbers such that a+b+c=p then, which of the following is true?

If a, b, c are positive real numbers such that a+b+c=p then, which of the following is true?

If a/b=c/d and a,b,c,d are positive numbers, then which of the following statement are true?

If a/b=c/d and a,b,c,d are positive numbers, then which of the following statement are true? If false write statement. (b-a)/(a)=(d-c)/c

If positive quantities a,b,c are in H.P. , then which of the following is not true ?