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3 years ago

6

how many of the first ten positive whole numbers can be expressed as the sum of two different prime numbers?

1 answer:

leonid [27]3 years ago

7 0

1 = Not Possible
2 = Not Possible
3 = Not Possible
<span>4 = 2 + 2 </span>
<span>5 = 2 + 3 </span>
<span>6 = 3 + 3 </span>
<span>7 = 2 + 5 </span>
<span>8 = 3 + 5 </span>
<span>9 = 2 + 7 </span>
<span>10 = 3 + 7
</span>Taking into account that there must be two "Different" prime numbers, that leaves <span>5, 7, 8, 9, and 10. So 5 of the first 10 whole numbers.</span>

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Read 2 more answers