Tickets

On Monday, 33 tickets were sold. Every next day, twice as many as the previous day. How many tickets were sold on Friday and how many totally from Monday to Friday?

Correct result:

l5 =  528
s =  1023

Solution:

l1=33 l2=2 l1=2 33=66 l3=2 l2=2 66=132 l4=2 l3=2 132=264 l5=2 l4=2 264=528
s=l1+l2+l3+l4+l5=33+66+132+264+528=1023



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