When which digit in 467*15*23 is added 1, the product changes by least value?	Answers:
A) 1
B) 2
C) 6
D) 7
E) 5
let volume of cuboid = 8*9*10= 
<gadget id="calculator">8*9*10</gadget>
<output>720</output>
720   which value(8/9/10) should be added 1 so the net result is least affected.   let add 1 to 8   vol= 9*9*10= 
<gadget id="calculator">9*9*10</gadget>
<output>810</output>
810 (change from original= 810-720= 
<gadget id="calculator">810-720</gadget>
<output>90</output>
90)   let add 1 to 9   vol:   8*10*10= 
<gadget id="calculator">  8*10*10</gadget>
<output>800</output>
800 (change from original= 800-720= 
<gadget id="calculator">800-720</gadget>
<output>80</output>
80)   let add 1 to 10   vol= 8*9*11= 
<gadget id="calculator">8*9*11</gadget>
<output>792</output>
792 (change from original= 792-720= 
<gadget id="calculator">792-720</gadget>
<output>72</output>
72)   so take away:   in order to have least effect always change the maximum value.   now in our example to have least effect on 467∗15∗23467∗15∗23   we need to keep 2 thing in mind   1)change the unit digit(Because if you change tens or hundred place then it will have larger effect that's common sense)   2)change the biggest number   so biggest number is 467 and unit digit of this 7.   ANSWER:7
<result>D</result>
When which digit in 467*15*23 is added 1, the product changes by least value?