Question 1190095
Which would you rather have, one million dollars or the amount of money you would get if a penny was doubled every day for a (30-day) month?
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"if a penny was doubled" is not clear.  There's no way to double a penny.
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If you receive a penny the 1st day, then 2 pennies the 2nd day, that's 3 pennies.
<pre>
Day   Pennies
1       1
2       3
3       7
4       15
5       31
6       63
</pre>

If that's the case, in 30 days you have 2^30-1 = 1,073,741,823 pennies.
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If the total amount is doubled each day, then you have 2 pennies the 2nd day, not 3. In 30 days you have 2^29 pennies = 536,870,912 pennies.
<pre>
Day   Pennies
1       1
2       2
3       4
4       8
5       16
6       32
</pre>