It is: 2*(3+4)+1 = 15
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4 + 1 = 5 5 x 3 = 15 15 + 2 = 17
No, only these numbers can: 1, 3, 5, 15.
The factors of the numbers are 12: 1, 2, 3, 4, 6, and 12 15: 1, 3, 5, and 15 30: 1, 2, 3, 5, 6, 10, 15, and 30 The GCF of the three numbers is the largest number that is a factor of all three numbers, which is 3.
1+2+3+4+5=15/5=3
The sum of the first 5 numbers is 15. 1+2+3+4+5=15