Aptitude Tests 4 Me

Basic Numeracy/Quantitative Aptitude

379. In a deck of cards there are 52 cards numbered from 1 to 13. There are 4 cards of each number in the deck. If you insert 12 more cards with the number 10 on them and you shuffle the deck really good, what is the probability to pull out a card with a number 10 on it?

 (a) 1/4 (b) 4/17 (c) 5/29 (d) 4/13

380. There are 18 balls in a jar. You take out 3 blue balls without putting them back inside, and now the probability of pulling out a blue ball is 1/5. How many blue balls were there in the beginning?

 (a) 9 (b) 8 (c) 7 (d) 6

381. In a box there are A green balls, 3A + 6 red balls and 2 yellow ones. If there are no other colors, what is the probability of taking out a green or a yellow ball?

 (a) 1/5 (b) 1/2 (c) 1/3 (d) 1/4

382. The probability of Sam passing the exam is 1/4. The probability of Sam passing the exam and Michael passing the driving test is 1/6. What is the probability of Michael passing his driving test?

 (a) 1/24 (b) 1/2 (c) 1/3 (d) 2/3

383. In a blue jar there are red, white and green balls. The probability of drawing a red ball is 1/5. The probability of drawing a red ball, returning it, and then drawing a white ball is 1/10. What is the probability of drawing a white ball?

 (a) 1/5 (b) 1/2 (c) 1/3 (d) 3/10

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