4. In a class A of 30 students 24 passed, whereas in another class B of 20 students 18 passed. In which class was a greater fraction of students passed? What values are depicted in the question?
Answers
Answer:
Answer:
The number of students who have taken both the subjects is 4.
Step-by-step explanation:
Given : In a class of 25 students, 12 have taken mathematics, 8 have taken mathematics but not biology. If each student has taken either mathematics or biology or both.
To find : The number of students who have taken both the subjects?
Solution :
Total number of students = 25.
Let M be student taken math
Let B be student taken biology
According to question,
n(M\cup B)=25n(M∪B)=25
n(M)=12n(M)=12
n(M-B)=8n(M−B)=8
The number of students who have taken both the subjects is
n(M\cap B)=n(M)-n(M-B)n(M∩B)=n(M)−n(M−B)
n(M\cap B)=12-8n(M∩B)=12−8
n(M\cap B)=4n(M∩B)=4
Therefore, The number of students who have taken both the subjects is 4.
Step-by-step explanation:
- please make it a brainliest answer.
Step-by-step explanation:
ᴅɪssɴғᴇᴄᴛᴇ ᴅɪsɴɴᴇғғᴇᴄᴛ ᴍᴇ ʟᴀʟᴀʟᴀʟᴀʟʟᴀ ᴀᴍᴇsʟᴍᴇᴠᴡᴋʟ ʜ ɪs ᴀ ᴋɪᴅ ᴀɴᴅ ɪ ᴅᴏɴ'ᴛ ʜᴀᴠᴇ ᴛᴏ ᴘᴇᴇ