Maths-
General
Easy

Question

If  n left parenthesis A right parenthesis equals 4 comma n left parenthesis B right parenthesis equals 3 comma n left parenthesis A cross times B cross times C right parenthesis equals 240, then n left parenthesis C right parenthesis is equal to

  1. 288
  2. 9
  3. 12
  4. 17

The correct answer is: 9


    table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell because n left parenthesis A cross times B cross times C right parenthesis equals n left parenthesis A right parenthesis cross times n left parenthesis B right parenthesis cross times n left parenthesis C right parenthesis end cell row cell therefore n left parenthesis C right parenthesis equals fraction numerator 24 over denominator 4 cross times 3 end fraction equals 2 end cell end table

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