Question

G.M of X is 10,G.M of y is 15 G.M of xy is​

Answer 1

Answer:

Root of(3y)=6

squaringon both sides we get

3y=36

y=12

Answer 2

$GOOD \: \: \: MORNING \: \\ \\ geometric \: \: mean \: of \: two \: numbers \: say \: \\ a \: and \: b \: is \: given \: by \\ ab = \sqrt{ab} \\ \\ here \: \: x = 10 \: \: and \: \: \: y = 15 \\ \\ so \: \: g.m of \: xy \: = \sqrt{xy} \\ \\ g.m of \: xy \: = \sqrt{10 \times 15} \\ \\ g. m \: of \: xy = \sqrt{150} \\ \\ g.m \: of \: xy = \sqrt{5 {}^{2} \times 6 } \\ \\ g.m \: of \: xy = 5 \sqrt{6}$