**Card Puzzle - 21 February**

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

**For Solution :**Click Here

This Blog is a collection of brain teasers, puzzles (maths,fun,brain etc), riddles,Questions, Quiz.

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

Subscribe to:
Post Comments (Atom)

Difficulty Level 3/5
(767)
Logic Puzzles
(513)
Difficulty Level 4/5
(501)
Riddles
(367)
Picture Puzzles
(365)
Difficulty Level 2/5
(359)
Maths Puzzles
(358)
Trick Teasers
(293)
Popular Puzzles
(227)
Rebus Puzzles
(162)
Humor Puzzles
(155)
Interview Puzzle
(131)
Series Puzzles
(131)
What Word Am I
(101)
Difficulty Level 1/5
(90)
Equation Puzzles
(80)
Trivia
(78)
Mystery Puzzles
(74)
Difficulty level 5/5
(58)
Who Am I
(51)
Murder Mystery Puzzles
(44)
Probability Puzzles
(40)
Square Count
(40)
Algebra
(36)
IAS-EXAMS
(34)
Cipher Puzzles
(33)
Science Puzzles
(32)
Situation Puzzles
(28)
MatchSticks-Riddles
(26)
Puzzles of Age
(21)
statement
(19)
Google Interview Puzzle
(18)
Read Between Lines Puzzles
(18)
Microsoft Interview Puzzles
(16)
Odd One Out
(15)
Time Distance Problem
(14)
Relationship Puzzles
(12)
Cards
(10)
Story Puzzles
(10)
Paradox Puzzles
(9)
Classic
(6)
Directional Puzzles
(6)
Best Of 2011
(5)
clever
(5)
Analytical
(4)
Brain-Twister
(4)
Mind Games
(4)
chess
(4)
What Does This Text Mean
(3)
CHALLENGING
(2)
Double Meaning
(2)
Acronym
(1)
Measure
(1)
Suduko
(1)
Video Riddle
(1)
coin-Puzzles
(1)
m
(1)
pop
(1)
triv
(1)

40 cards

ReplyDeleteForty.

ReplyDeleteThe number of decks is irrelevant; the answer is the same if one or one-hundred decks are used.

Any card drawn will be a A,2,3,4,5,6,7,8,9,10,J,Q, or K, so there are 13 possibilities each time a card is drawn.

The fastest way to draw a four of a kind is if the first four cards all have the same "value." The slowest way, which provides the solution, is to first draw 13 three of a kinds, and then one more card.

Since 13 x 3 + 1 = 40, if 40 cards are drawn it is guaranteed that those forty cards contain at least one four of a kind.

40

ReplyDeleteHey how about 79. Is it correct? ?? 79 is my ans. Bcoz i believe fourofakind means all four shapes of a given no. So in day way forty is rong

ReplyDeleteu right^^^^^6

ReplyDeleteI too agree that 79 cards to be drawn to get all of the four shapes. (if the two decks are mixed togather. Otherwise we can choose one deck and start drawing from that deck only. Then it will be 40. )

ReplyDelete1 SIMPS

ReplyDelete79.

ReplyDelete