10% of 50kg is 5kg
50kg add 5kg is 55kg
=55kg
Answer:
56 ways
Step-by-step explanation:
Number of ways is given by n combination r (n!/(n - r)!r!)
n = total number of students = 8, r = the number of summer courses = 3
Number of ways = 8 combination 3 = 8!/(8-3)!3! = 8!/5!3! = 8×7×6×5!/5!×6 = 8×7 = 56 ways
Answer:
um 21
Step-by-step explanation:
Hope this helps you. Thank you....
