How many zeros does 135^19 x 42^17 end with? Choose the correct choice from the following answers:
A) 0	B) 2	C) 5	D) 13	E) 17
To know the zeros we need to know how many 10's are there for this need to find number of 2s and 5s ( 2 * 5 = 10)   135 = (5 x 3 ^3)^19 So Number of 5s are = 19   42 = (2x7x3)^17 so number of 2s = 17   So tot number of 10s in this number is (17-&gt; 2s x 17-&gt; 5s)   So answer is 17   ANSW17R:17
<result>E</result>
How many zeros does 135^19 x 42^17 end with?