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A certificate has (6) title styles, (2) seal options and (5) border designs. How many certificate designs are possible?

Answer and explanation

Correct answer: (60) designs

The governing concept is the fundamental principle of counting: independent design choices are multiplied to obtain the number of complete designs. A certificate can use 1 of 6 title styles, 1 of 2 seal options and 1 of 5 border designs. For each title style there are 2 possible seals, giving 6 × 2 = 12 title-seal combinations. Each of these can be paired with any of the 5 borders, so the total is 6 × 2 × 5 = 60. Thus option B is correct. Option A adds the choices instead of multiplying, option C omits the factor of 2, and option D doubles the correct product without justification. All three independent features must be included.

Related tags

Permutations-CombinationsFundamental-Principle-Of-CountingDesign-CountingFundamental Principle Of CountingPermutations And CombinationsMathematicsClass 11 Mcq

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