GRE Exam Numerical Ability Number System

How many numbers between 200 and 400 meet one or both of the conditions given in the two statements below?
Statement 1: The number begins with 3
Statement 2: The number ends with 3

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GRE Other Question

There are 10 multiple choice questions in an examination. First 4 have 5 choices each and remaining have 4 choices each. How many sequences of answers are possible?
a)4^5 * 5^4 b)4^5 * 6^4 c)5^4 * 6^4 d)5^4 * 4^6 A picture is copied onto a sheet of paper 8.5 inches by 10 inches. A 1.5 inch margin is left all around. What area in square inches does the picture cover?