It is by: 3*(4+2)+1 = 19
(4+2)x3+1=19
171 = 3^2*19.
4(2+3)-1=19
2*(4! - 3! + 1) = 2*(24 - 6 + 1) = 2 * 19 = 38
If combining digits to form 2-digit numbers is allowed then some solutions are :- 21 + 3 - 5 = 19 23 + 1 - 5 = 19
2^1 x 3^1 x 19^1
Using correct order of operations, 8*3+2=26.
2x-y=3 2/3x-y=-1
-1/19.
Formally, 3*19 - 2*19 = 19*(3 - 2) = 19*1 = 19
4 x (3 + 2) - 1.
The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. The factors 1+3+5+10=19, 1+2+6+10=19, 1+3+15=19, and 3+6+10= 19.