Ans wud be 8.
U cant eliminate all the 2's in 30! because only 7 two can make 7 zeroes rest will b present there. so instead take out the highest power of primes till 30! nd den calculate thei last digit and multiply all the last digits to get the ans
--
With Regards
--
With Regards
Swati
__._,_.___
2IIM's Intensive Weekend Classes for CAT 2011 by IIM Alumni @ Chennai Starts Mar 20, 2011
http://www.2iim.com
Ascent's 2IIM Study Material for CAT - Comprehensive Course Material Prepared by IIM Alumni
http://www.2iim.com/IIM_CAT_classes_correspondence_courses/CAT_correspondence_course.shtml
http://www.2iim.com
Ascent's 2IIM Study Material for CAT - Comprehensive Course Material Prepared by IIM Alumni
http://www.2iim.com/IIM_CAT_classes_correspondence_courses/CAT_correspondence_course.shtml
.
__,_._,___
