Question

3. A 3x3 x 3 cube is built from 1 x 1 x 1 cubes. Then some cubes are
removed from front to back, from left to right and from top to bottom, as
shown. How many 1x 1x 1 cubes are left?
(C) 20
(A) 15
(D) 21
(B) 18
(E) 22

Answer 1

Answer:

20

Step-by-step explanation:

as bevause there are 3×3×3 cubes and outt of it 1×1×1 cubes are left