3+4+5+6
54
21
They are 18, 19 and 20.
The numbers are 17 and 18.
17 + 18 + 19 = 54
(12 + 14) + (16 + 18) = 60 26 + 34 = 60
54
21
16, 17, and 18
They are 18, 19 and 20.
The numbers are 17 and 18.
17 + 18 + 19 = 54
54
The numbers are 16, 18, 20, 22 and 24.
The numbers are4, 6, 8and also5, 6, 7.
They are 17, 18, 19, 20 and 21.
17, 18, 19, 20 and 21.