Easy Combinatorics Interview Questions
Working a topic at its easiest level first is how you find out whether the gap is the concept or the speed. These are the combinatorics questions to start on.
62 questions, 62 of them free to practise right now.
- 1 immediately before 2EasyProbabilityCombinatoricsView →
- A coin that branches into a dieEasyCombinatoricsExpected ValueView →
- A divisor of a power of tenEasyProbabilityCombinatoricsView →
- A guest list with a feudEasyCombinatoricsView →
- A majority of onesEasyCombinatoricsView →
- A perfect-power dice sumEasyProbabilityCombinatoricsView →
- A repeated digit in the PINEasyProbabilityCombinatoricsView →
- All four aces before any kingEasyProbabilityCombinatoricsView →
- All the squares on a chessboardEasyCombinatoricsBrainteasersView →
- An even palindromeEasyProbabilityCombinatoricsView →
- An odd subset with two small elementsEasyCombinatoricsView →
- Arranging colored balls in a lineEasyCombinatoricsView →
- At least one blue and one greenEasyProbabilityCombinatoricsView →
- At least one matching pair in three cardsEasyProbabilityCombinatoricsView →
- BALLOON arrangements bookended by vowelsEasyCombinatoricsView →
- Codes with exactly one vowelEasyCombinatoricsView →
- Committee with both sexesEasyCombinatoricsView →
- Counting 8-bit stringsEasyCombinatoricsView →
- Counting arithmetic triplesEasyProbabilityCombinatoricsView →
- Counting flushesEasyProbabilityCombinatoricsView →
- Counting nines to 1000EasyCombinatoricsBrainteasersView →
- Counting up-down walks to a targetEasyCombinatoricsView →
- Distinct-digit numbers using a 7EasyCombinatoricsView →
- Divisible by 2 or 3EasyCombinatoricsView →
- Divisible by neither 2 nor 3EasyCombinatoricsView →
- Dots on distinct edgesEasyProbabilityCombinatoricsView →
- Drawing a matching pair of socksEasyProbabilityCombinatoricsView →
- Even numbers, distinct digitsEasyCombinatoricsView →
- Even-size, non-empty subsetEasyProbabilityCombinatoricsView →
- Exactly one ace in three drawsEasyProbabilityCombinatoricsView →
- Finding the number of blue socksEasyProbabilityCombinatoricsView →
- Four dice summing to twentyEasyProbabilityCombinatoricsView →
- Handshakes across two groupsEasyCombinatoricsView →
- Handshakes at four couplesEasyCombinatoricsBrainteasersView →
- Hopping rabbitEasyProbabilityCombinatoricsView →
- Integers that contain a zeroEasyCombinatoricsBrainteasersView →
- Interior crossings of a decagon's diagonalsEasyCombinatoricsView →
- Lattice paths through a checkpointEasyCombinatoricsView →
- MISSISSIPPI with the P's togetherEasyCombinatoricsView →
- Matching chips, two drawsEasyCombinatoricsExpected ValueView →
- Matching head countsEasyProbabilityCombinatoricsView →
- Merging two round-robinsEasyCombinatoricsView →
- Probability two dice sum to a primeEasyProbabilityCombinatoricsView →
- Repeated digit on a plateEasyCombinatoricsView →
- Round table with a couple togetherEasyCombinatoricsView →
- Seating with a gapEasyCombinatoricsView →
- Socks for a matching trioEasyCombinatoricsBrainteasersView →
- Strictly increasing three-digit numbersEasyCombinatoricsView →
- Subsets containing one element but not anotherEasyCombinatoricsView →
- The top two cards form a pairEasyProbabilityCombinatoricsView →
- Three cube faces at a cornerEasyProbabilityCombinatoricsView →
- Three dice, increasingEasyProbabilityCombinatoricsView →
- Three distinct dice, no sixEasyProbabilityCombinatoricsView →
- Three-one strings with matching endpointsEasyCombinatoricsView →
- Top three dice summing to eighteenEasyProbabilityCombinatoricsView →
- Triangles across two linesEasyCombinatoricsView →
- Two numbers in different groupsEasyProbabilityCombinatoricsView →
- Two ordering constraints at onceEasyProbabilityCombinatoricsView →
- Two primes with an even sumEasyProbabilityCombinatoricsView →
- Units digit of a random productEasyProbabilityCombinatoricsView →
- Ways to reach deuceEasyProbabilityCombinatoricsView →
- Which side holds the heavy weightEasyProbabilityCombinatoricsView →
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