How do you calculate this?

ohh yeh, john - show us how ?

The right answer is 327.67

No idea. Never heard of anything like this before.

its so difficult. Answer please

What's so difficult, using your brain?

What's so difficult, using your brain? :)

So difficult :)))))))

You didn't even get the question - ahahaha - we start with $1 not a penny - and what's the formula you'd be using for it? The SUM of 1+2+4+8+16+32+64+128+256+512=1,023 in 10 days at $100 a day - so $1,023 is more than $1,000 - solving for t, the number of days, the formula is 2^t > 100t or 2^t / 100t > 1

Day 1: $.01
Day 2: $.02
Day 3: $.04
Day 4: $.08
Day 5: $.16
Day 6: $.32
Day 7: $.64
Day 8: $1.28
Day 9: $2.56
Day 10: $5.12
Day 11: $10.24
Day 12: $20.48
Day 13: $40.96
Day 14: $81.92
Day 15: $163.84