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what is the difference of the first 25 multiples of 3, subtracted from the first 25 multiples of 4

 Jul 7, 2015

Best Answer 

 #1
avatar+128474 
+5

Notice the pattern......

 

(4-3) +( 8-6) + (12-9) + (16-12)+..........+ (96-72) + (100-75)   =

 

1 + 2 + 3 + 4 + ........+ 24  + 25  =     [25 * 26] / 2 =  25 * 13 =   325

 

 

 Jul 7, 2015
 #1
avatar+128474 
+5
Best Answer

Notice the pattern......

 

(4-3) +( 8-6) + (12-9) + (16-12)+..........+ (96-72) + (100-75)   =

 

1 + 2 + 3 + 4 + ........+ 24  + 25  =     [25 * 26] / 2 =  25 * 13 =   325

 

 

CPhill Jul 7, 2015

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