The integer N is given by N = 2^M × 5^386, where M is an integer. If N is known to have 388 digits, how many values can M take?
OPTIONS
1) 1
2) 2
3) 3
4) 4
5) 5
Average age of group of 50 gals is increased by 6 months, when 10 of them whose average was 16 years replaced by 10 new gals.find the average age of new comers...