Maths Maths Puzzle Numerical Ability Sequence and Series

Find the least value of 3x + 4y, if (x^2)(y^3) = 6 .

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Maths Other Question

The sum of the three numbers is 98. if the ratio between the first & second is 2:3 & that between the second and third is 5:8 , then the second number is ??
A grandmother,mother and daughter wish to arrange themselves in a row in order to be photographed.How many different ways they can be arranged?
a.6
b.9
c.27
d.30
e.none