actually it is asking at most how many means maximum possibility of no. of students got positive marks. here total no. are 20, so most how 19 are quite possible and due to 20th the...
Hello Pooja,
Greetings!!
I will try to simplify your query hope you will satisfy with this
Suppose there is a series of 20 numbers
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,...