In how many ways can 5 people from a group of 8 people be seated around a circular table?
A
1200
B
560
C
2520
D
1344
উত্তরের বিবরণ
Question: In how many ways can 5 people from a group of 8 people be seated around a circular table?
Solution:
5 people out of 8 = 8C5
= 8!/5!(8 - 5)!
= 8!/(3! × 5!)
= (8 × 7 × 6 × 5!)/(6 × 5!)
= 56
And 5 people around a circular table = (5 - 1)! = 4! = 24
∴ Total ways = 24 × 56 = 1344
0
Updated: 12 hours ago
M(x) = 2x2 - 5x + x3 + 7 এবং N(x) = x2 - 2x + 3 হলে, M(x)/N(x) এর মাত্রা কত?
Created: 1 week ago
A
0
B
1
C
4
D
2
প্রশ্ন: M(x) = 2x2 - 5x + x3 + 7 এবং N(x) = x2 - 2x + 3 হলে, M(x)/N(x) এর মাত্রা কত?
সমাধান:
M(x) = 2x2 - 5x + x3 + 7
সর্বোচ্চ ঘাত হলো 3, তাই M(x) এর মাত্রা 3
এবং
N(x) = x2 - 2x + 3
সর্বোচ্চ ঘাত হলো 2, তাই N(x) এর মাত্রা 2
M(x)/(N) = x3/x2 = x3 - 2 = x1
অতএব, M(x)/N(x) এর মাত্রা হলো 1
0
Updated: 1 week ago
Find the value of 5(m + 4) - 2(3m - 1) + m.
Created: 12 hours ago
A
18
B
22
C
15
D
24
Question: Find the value of 5(m + 4) - 2(3m - 1) + m.
Solution:
Given that,
5(m + 4) - 2(3m - 1) + m
= 5m + 20 - 6m + 2 + m
= 6m - 6m + 22
= 22
0
Updated: 12 hours ago
