Answer:
the number of possible selection is 12650
Option b) 12650 is the correct answer.
Step-by-step explanation:
Given the data in the question;
total number of students n = 25
number of student selected r = 4
= ²⁵C₄
= 25! / ( 4!( 25 - 4 )! )
= 25! / (4!(21)!)
= 12650
Therefore, the number of possible selection is 12650
Option b) 12650 is the correct answer.
Answer: 2500
Step-by-step explanation:
I don’t know if it’s right
Answer:
B
Step-by-step explanation: We dont have enough info to answer this question
3/5 hour ⇒ 1/4 of the book
Find 1/5 hour:
1/5 hour ⇒ 1/4 ÷ 3 = 1/4 x 1/3 = 1/12 of the book
Find 5/5 (1 hour):
5/5 hour ⇒ 1/12 x 5 = 5/12 of the book
Answer: 5/12 of the book
Answer:
30 minutes / half an hour