Practicing Success
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CUET
General Test
Numerical Ability
Ratios
The mean proportional between 6 and another number is 30. What is that number ?
150
$5\sqrt{6}$
180
$6\sqrt{5}$
Mean proportion of a and b = √ab,
⇒ √6x = 30,
Squaring both sides,
⇒ 6x = 900,
⇒ x = 150.