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In the expression (1 + (1 + 1) * 2) * 2, Sarah may erase one open parenthesis (" ( ") and one close parenthesis (" ) " ), or she may erase nothing. Find the least possible value of the resulting expression.

 Apr 9, 2021
 #1
avatar+118626 
+1

If  she  erases  nothing

 (1 + (1 + 1) * 2) * 2 =   (1 + 2*2) * 2  =  10

 

Other  possibilities

 

1 + (1 + 1 *2) *2  =  1  + (3)*2  =  7   =    least possible  value

 

1  + (1 + 1) * 2 * 2  =  1  + 2 * 2 * 2  =  9

 

(1 +  1 + 1 *2) *2  =  ( 2 + 2)*2  =  4 * 2  =  8

 

(1  + 1 + 1) * 2  * 2  =   (3) * 2 * 2  =  12

 

 

cool cool cool

 Apr 9, 2021
 #2
avatar
+1

Thx Chris it's correct

 Apr 9, 2021
 #3
avatar+118626 
0

OK.....!!!

 

 

cool cool cool

CPhill  Apr 9, 2021

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