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Arithmetic Ability

Probability Triangles
What decimal of an hour is a second ?
How many times in a day, the hands of a clock are straight?
How many times are the hands of a clock at right angle in a day?
The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?
Two dice are thrown simultaneously. What is the probability of getting the sum of the face number is odd?
Which of the following trains is the fastest ?
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