All the faces of cubes are painted with red colour.It is then cut into 64 equal small cubes.Find How many small cubes are there whose three faces are coloured ?
Choose the correct choice from the following options:
A) 4
B) 8
C) 16
D) 24
E) 2

Rationale: there are 64 small cubes , hence one side side of the big cube is 3 √ 64 = 4 cm number of small cubes having three faces coloured = no . of corners = 8 answer : b
Answer: B