GMAT Quantitative Reasoning Practice Test 4

Question : 79 of 100

Marks: +1, -0

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?

$1 \/ 4$
$4 \/ 17$
$5 \/ 29$
$4 \/ 13$
$1 \/ 3$

Validate

Solution:

The total number of cards in the new deck is

12+52=64

.
There are

4+12=16

cards with the number 10 .
The probability of drawing a 10 numbered card is

16 / 64=1 / 4

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