In a circle of n different persons, the total number of arrangements possible = (n - 1)!
Total number of arrangements = n(S) = (15 ? 1)! = 14 !
Taking three persons as a unit, total persons = 13 (in 4 units)
Therefore no. of ways for these 13 persons to around the circular table = (13 - 1)! = 12!
In any given unit, 3 particular person can sit in 3!. Hence total number of ways that any three person can sit =
n(E) = 12! X 3!
Therefore P (E) = probability of three persons sitting together = n(E) / n(S) = 12! X 3 ! / 14!
= 12!x3x2 / 14x13x12! = 6/14x13 = 3/91
19657 Let x - 53651 = 9999 33994 Then, x = 9999 + 53651 = 63650 ----- 53651 -----
⟹ x + 3699 + 1985 = 31111 + 2047
⟹ x + 5684 = 33158
⟹ x = 33158 - 5684 = 27474.
Let 250 / √x = 10.
Then √x= 250 / 10 = 25
∴ x = 625
Let x + 6207 - 9038 = 107
Then x = (107 +9038) - (6207)
= 2938
Let x - 4799 = 1714
Then, x = 4799 + 1714
= 6513.
Let 9501 - x = 3697
Then x = 9501 - 3697
= 5804
66066 + 6606 + 66 + 6 = 72744
Let y x 48 = 173 x 240
Then y = (173 x 240) / 48
=173 x 5
= 865 .
Let N x 11 = 555555
Then N = 555555 / 11 = 50505.
Let 87 x N = 3393
Then, N = 3393 / 87 =39 .
Comments
There are no comments.Copyright ©CuriousTab. All rights reserved.