SOLUTION: Hi! Thank you for viewing my problem. I am not overly certain where to submit this, really, but all I need is an answer check on it. Thank you in advance! ---- 4) CLASSIC PROBLEM

Question 29567: Hi! Thank you for viewing my problem. I am not overly certain where to submit this, really, but all I need is an answer check on it. Thank you in advance!
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4) CLASSIC PROBLEM - A traveling salesman (selling shoes) stops at a farm in the Midwest. Before he could knock on the door, he noticed an old truck on fire. He rushed over and pulled a young lady out of the flaming truck. Farmer Crane came out and gratefully thanked the traveling salesman for saving his daughter�s life. Mr. Crane insisted on giving the man an award for his heroism.
So, the salesman said, �If you insist, I do not want much. Get your checkerboard and place one grain of wheat on the first square. Then place two grains of wheat on the next square. Then place four grains on the third square. Continue this until all 64 squares are covered with grains of wheat.� As he had just harvested his wheat, Mr. Crane did not consider this much of an award, but he soon realized he made a miscalculation on the amount of wheat involved.
a) How much wheat would Mr. Brown have to put on the 24nd square?

b) How much total grain would the traveling salesman receive if the checkerboard only had 24 squares?

c) Calculate the amount of wheat necessary to fill the whole checkerboard (64 squares). How much wheat would the farmer need to give the salesman?

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a) 276
b) 2301
c)43,411
Are these correct?
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And:
Use the geometric sequence of numbers 1, 1/3, 1/9 , 1/27� to find the following:
What is r, the ratio between 2 consecutive terms?
Answer: 1/3 (a = 1, r = 1/3)
Using the formula for the sum of the first n terms of a geometric series, what is the sum of the first 10 terms?
Answer: 118,097.33

I also need to find this to the first 12 terms. If the 10 terms answer is correct, I can figure this out. Please help! thank you!
Warmest regards,
Bex
Answer by longjonsilver(2297) (Show Source): You can put this solution on YOUR website!
Sorry but you are way off on all your answers. Way way off.

rice sequence:
square: 1 2 3 4 5 6
# rice: 1 2 4 8 16 32
pattern

formula where n is the square number

So, square 24 has grains of rice --> 8388608

Geometric series, a=1, r=2, n=24

Sum = -16777215/-1
Sum 16777215 rice grains

you do part c)

As for the second Q...you have a series of numbers starting 1 then 1/3 then 1/9 all getting smaller. You add up these and get the number 118,097.33? How?

You will be lucky if the answer is bigger than 2.

OK, so you try it again now.

Jon.

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