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What is : equal to?

 Mar 21, 2019
 #1
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We have an arithmetic series

 

The first term =  98 - 2(1) = 96

The 11th term is   98 - 2(11) = 76

 

The sum is given by :

 

[ first term + 11 term ] * ( number of terms) / 2  =

 

[ 96 + 76 ] ( 11) / 2  =

 

172 * 11/ 2  =

 

(172 / 2 ) * 11 =

 

(86) * 11

 

946

 

 

cool  cool  cool

 Mar 21, 2019

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