A company can give ads in three ways by 3 magazines, 2 tv, 2 radio. But the company chooses 2 magazines 1 tv, 1 radio for ads. Therefore how many ways company gave ads?

• from 3 magzinne we choose 2= 3c2 = 3
  from 2 tv we choose 1= 2c1 =2
  from 1 radio we choose 1= 2c1 =2
  
  so total ways are= 3*2*2= 12
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