0 votes 0 votes Quantitative Aptitude numerical test-series and sequence-series + – Palak jadav asked Oct 5, 2018 Palak jadav 312 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
1 votes 1 votes For two numbers $a$ and $b$ $H.M = \frac{2ab}{a+b}$ $G.M = \sqrt{ab}$ $A.M = \frac{a+b}{2}$ $A.M * H.M = G.M^2$ $A.M = \frac{G.M^2}{H.M} = \frac{21^2}{147} = 3$ Shobhit Joshi answered Oct 5, 2018 Shobhit Joshi comment Share Follow See all 0 reply Please log in or register to add a comment.