1. A cube whose edges are 3 inches is paintedblue. The cube is then cut into sma

Question

1. A cube whose edges are 3 inches is paintedblue. The cube is then cut into smaller cubes, all of whichhave edges that are 1 inch long. How many of the small cubeshave no paint on them? a. 0   b. 1    c. 3   d.4     e. 9 2. the sum of the first 1000 counting numbers has a unit'sdigit of _________. 1. A cube whose edges are 3 inches is paintedblue. The cube is then cut into smaller cubes, all of whichhave edges that are 1 inch long. How many of the small cubeshave no paint on them? a. 0   b. 1    c. 3   d.4     e. 9 2. the sum of the first 1000 counting numbers has a unit'sdigit of _________.

Explanation / Answer

1. there is 1 inner cube with no paint 2. 1 + 2 + ... + 1000 = 1000*1001/2 = 500500

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