Serial numbers for a product are to be made using letters followed by digits. the letters are to be taken from the first letters of the alphabet, with no repeats. the digits are taken from the digits , with no repeats. how many serial numbers can be generated?

151,200 can be generated

Step-by-step explanation:

Serial numbers for a product are to be made using 2 letters followed by 4 numbers. If the letters are to be taken from the first 6 letters of the alphabet with no repeats and the numbers are taken from the digits 0 through 9 with no repeats, how many serial numbers can be generated?

2 letters of 6 AND 4 numbers of 10

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As it is ordered, it's a permutation, so:

₆P₂ AND ₁₀P₄ = ₆P₂*₁₀P₄ = 6.5.10.9.8.7 = 151200

4th option is correct xy=-10

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6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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