14
GCF(14, 28, 42) = 14.
The answer will depend on the units for 14 x 28. Is that 14 ft x 28 ft or 14 miles x 28 miles, 14 metres x 28 metres? Who knows? Not me!
Half of 28 Is 14. Or do 14 + 14 = 28 plus, 2x14
twenty five
The pattern is... add 7 then subtract 4. The next two numbers would be 45 & 41.
you add 10 to each number in the series of three. If you break the pattern into groups of three you will see 8-14-5 then 18-24-15 then 28-34. . . so 8+10=18+10=28, 14+10=24+10=34, 5+10=15+10=25, so continuing the pattern would be starting at 28: 28-34-25-38-44-35-48-54-45. . .
Each time you add 7 chairs perhaps?
There are infinitely many possible rules. One such is: Un = (-45n6 + 993n5 - 8385n4 + 33895n3 - 66930n2 + 59192n - 15360)/240 for n = 1, 2, 3, ...
14
28 2*14 = 28 1*28 = 28
28
14 is less than 28 or 14 < 28
14 is less than 28 or 14 < 28
The LCM of 14 and 28 is 28. The LCM of 7, 14 and 28 is 28.
The GCF of 14 and 28 is 14. Since 14 is a factor of 28, it is automatically the GCF.
The GCF for 28 14 is 14.