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Basic Numeracy/Quantitative Aptitude

572. Exactly two sides of a certain 10-sided die are red. What is the probability that Kumar rolls the die 3 times and the die lands with a red side up for the first time on the third roll?

 (a) 0.032 (b) 0.064 (c) 0.128 (d) 0.200

573. A tennis marker is trying to put together a team of four players for a tennis tournament out of seven available. males - a, b and c; females - m, n, o and p. All players are of equal ability and there must be at least two males in the team. For a team of four, all players must be able to play with each other under the following restrictions: b should not play with m, c should not play with p, and a should not play with o. Which of the following statements must be false?

 (a) b and p cannot be selected together (b) c and o cannot be selected together (c) c and n cannot be selected together (d) c and p cannot be selected together

574. A man bought a horse and a cart. If he sold the horse at 10 % loss and the cart at 20 % gain, he would not lose anything; but if he sold the horse at 5% loss and the cart at 5% gain, he would lose Rs. 10 in the bargain. The amount paid by him was Rs.- _______ for the horse and Rs.________ for the cart.

 (a) Cost price of horse = Rs. 200 & the cost price of cart = 200 (b) Cost price of horse = Rs. 400 & the cost price of cart = 400 (c) Cost price of horse = Rs. 400 & the cost price of cart = 200 (d) Cost price of horse = Rs. 200 & the cost price of cart = 400

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Detailed Solution

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