x + 21/3 + 22/3 = 0 হলে, x3 + 6 এর মান কত?
A
4x
B
6x
C
4
D
8
উত্তরের বিবরণ
প্রশ্ন: x + 21/3 + 22/3 = 0 হলে, x3 + 6 এর মান কত?
সমাধান:
দেওয়া আছে,
x + 21/3 + 22/3 = 0
বা, x = - (21/3 + 22/3) .......... (1)
বা, x3 = - (21/3 + 22/3)3
বা, x3 = - {(21/3)3 + (22/3)3 + 3.21/3.22/3(21/3 + 22/3)}
বা, x3 = - {2 + 4 + 3.23/3.(- x)} [(1) নং হতে]
বা, x3 = - (6 - 6x)
বা, x3 = - 6 + 6x
∴ x3 + 6 = 6x
0
Updated: 1 month ago
In how many ways can 5 people from a group of 8 people be seated around a circular table?
Created: 3 weeks ago
A
1200
B
560
C
2520
D
1344
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: 3 weeks ago
4x + 4x + 4x + 4x এর মান নিচের কোনটি?
Created: 2 months ago
A
16x
B
44x
C
22x + 2
D
28x
প্রশ্ন: 4x + 4x + 4x + 4x এর মান নিচের কোনটি?
সমাধান:
4x + 4x + 4x + 4x
= 4x(1 + 1 + 1 + 1)
=4x × 4
= 4x + 1
= (22)x + 1
= 22x + 2
0
Updated: 2 months ago
n = 0 হলে
6n/an = ?
Created: 2 months ago
A
0
B
1
C
2
D
- 2
সমাধান:
দেওয়া আছে,
n = 0
প্রদত্ত রাশি,
6n/an
= 60/a0
= 1/1
= 1
0
Updated: 2 months ago
