work out the final answer

sufinaz

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Nov 22, 2019
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100-99+98-97+96-95+...…….and so on.....+2-1
what is the final answer?
 

MarkFL

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Hello, and welcome to FMH! :)

What if you group as follows:

(100 - 99) + (98 - 97) + (96 - 95) + ... + (2 - 1)
 

Jomo

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Dec 30, 2014
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100-99+98-97+96-95+...…….and so on.....+2-1
what is the final answer?
Welcome to the forum. The way it works here is that in the end you give us the solution and we help you get there. We just do not give final answers.
MarkFL gave you a wonderful hint. Are you able to work with that? You are just adding 1's and the real question is how many 1's.
Post back and let us know how you are making out with this problem.
 

sufinaz

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Nov 22, 2019
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Hello, and welcome to FMH! :)

What if you group as follows:

(100 - 99) + (98 - 97) + (96 - 95) + ... + (2 - 1)
it is actually asking work out the final answer?
 

MarkFL

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sufinaz

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Nov 22, 2019
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every two number provides 1, 100 divides by 2= 50
that's what I understood
 

Subhotosh Khan

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sufinaz

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Nov 22, 2019
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thank you, loved this page !
 
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