What power of 45 will exactly divide 123!
A)29
B)30
C)31
D)59

• 45=3^2*5
  the no of 5's and the no of 3's present in the 123 is the no of 5's present in 123 is 24+4=28
  the no of 3^2 is 29
  so, the answers is lower of two
  hence 28 is the answer
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