42:20:64:?

Multiply: (42)/(64)xx(-48)/(35)

{:(6,7,8),(36,49,64),(42,56,?):}

sqrt((42 - 6)(20 + 16)) =

2 8 12 20 30 42 56

The volume of two spheres is in the ratio 27:64 . The sum of their radii is 42 cm. find their radii.

The number of elements among the following atomic numbers that are p block elements is ______. 83,79,42,64,37,54,34

Select the missing number from the given responses. {:(92,70,48),(64,53,42),(52,45,?):}