There are n students in a school . If r% among the students are 12 years or younger, which of the following expressions represents the number of students who are solder than 12?
A
n(1-r)
B
n ( 100-r) /100
C
n(1-r)/100
D
100(1-r)n
Correct Answer: n ( 100-r) /100
8 এর দুইগুণ 16, 16 এর দুইগুণ 32 একইভাবে 25 “ “ 50, 50 “ “ 100 হবে