GRE Exam Numerical Ability Clocks and Calendars

A watch shows the correct time at 12 noon. It loses 30 minutes every hour after that. Which of the following statements is true?
A. It shows 12:30 p.m. at 1 a.m.
B. It shows 12:30 p.m. at 1 p.m.
C. It shows 2 p.m. at 5 p.m.
D. It shows 2 p.m. at 4 p.m.
E. It shows 1 p.m. at 2 p.m

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Options B,D,E
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GRE Other Question

A shopkeeper marks his goods at 20% profit and gives a discount of 5%. Which of the following is/are true?
A. He gained 15%
B. He suffered a loss in the transaction
C. He gained 14%
D. If the cost price was Rs.200, the selling price after the discount was Rs. 228 The length and breadth of a cuboid are increased by 10% each while the height is decreased by 10%. Which of the following statements is/are true?
A. The volume of the cuboid increases
B. The volume of the cuboid decreases
C. The volume decreases by 9%
D. The volume increases by 8%
E. The volume increases by 8.9%