combinatorics

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  1. DAT Destroyer

    DAT OAT Math: Permutations with Restrictions | DAT Destroyer | OAT Destroyer | Dr. Jim Romano

    Give the problem a try before looking at the solution. Can you solve this DAT/OAT Quantitative Reasoning problem? This permutation problem tests an important counting strategy: arranging objects when certain objects cannot be next to each other. We have three 5-carbon sugars (pentoses)...
  2. DAT Destroyer

    DAT DAT OAT Math: Permutations with Restrictions | DAT Destroyer | OAT Destroyer | Dr. Jim Romano

    Can you solve this DAT/OAT Quantitative Reasoning problem? This permutation problem tests an important counting strategy: arranging objects when certain objects cannot be next to each other. We have three 5-carbon sugars (pentoses) and five 6-carbon sugars (hexoses). How many different...
  3. DAT Destroyer

    DAT OAT Math: Carbohydrate Sequence Arrangement | DAT Destroyer | OAT Destroyer | Dr. Jim Romano

    Can you solve this DAT/OAT Quantitative Reasoning problem? This permutation question tests one of the most important counting strategies on the DAT and OAT. Try solving it before swiping to the second slide for the complete solution. 📘 Join the Official DAT Destroyer Study Group on...
  4. DAT Destroyer

    DAT DAT/OAT Math: Carbohydrate Sequence Arrangement | DAT Destroyer | OAT Destroyer | Dr. Jim Romano

    Can you solve this DAT/OAT Quantitative Reasoning problem? This permutation question tests one of the most important counting strategies on the DAT and OAT. Try solving it before swiping to the second slide for the complete solution. 📘 Join the Official DAT Destroyer Study Group on...
  5. DAT Destroyer

    DAT Math: Pentose and Hexose Permutation Problem | DAT Destroyer | OAT Destroyer | Dr. Jim Romano

    Permutation problems reward students who identify the restriction before they begin counting. In this example, a sequence consists of three pentoses (5-carbon sugars) and five hexoses (6-carbon sugars), with the condition that a hexose must be placed on each end. Once those positions are...