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5 July, 08:08

Click the prime number cards to build composite numbers to 50.

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  1. 5 July, 08:50
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    See Explanation

    Step-by-step explanation:

    A prime number is a number that has only two factors, by 1 and itself.

    A composite number on the other hand are numbers which have more than two factors.

    To determine the number of prime cards needed to build each composite number, we first express the number as a product of its prime factors.

    These are:

    4=2X2

    6=2X3

    8=2X2X2

    9=3X3

    10=2X5

    12=2X2X3

    14=2X7

    15=3X5

    16=2X2X2X2

    18=2X3X3

    20=2X2X5

    21=3X7

    22=2X11

    24=2X2X2X3

    26=2X13

    27=3X3X3

    28=2X2X7

    30=2X3X5

    32=2X2X2X2X2

    33=3X11

    34=2X17

    35=5X7

    36=2X2X3X3

    38=2X19

    39=3X13

    40=2X2X2X5

    42=2X3X7

    44=2X2X11

    45=3X3X5

    46=2X2X13

    48=2X2X2X2X3

    49=7X7

    50=2X5X5

    Therefore for each of the numbers, those are the prime number cards to be used.

    Take for example, the number 50, the prime numbers that will be used to build 50 are the prime factors of 50.

    50=2 X 5 X 5

    Therefore, its prime factors are 2 and 5.

    We will use the following prime number cards:

    1 card with prime number 2 2 cards with prime number 5
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