Could someone explain how the answer was calculated
.
S = 0
for k in [1..3]:
S = S+k
S = 2*S
SAnswer: 12
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(1+2+3)⋅2=12
Set S=0
In the for loop:
k=1, S=0+1=1
k=2, S=1+2=3
k=3, S=3+3=6
Set S=2 * S = 2 * 6 = 12