Math miscellaneousEasy
Question
In the expansion of (1 + x + y + z)4 the ratio of coefficient of x2y, xy2z, xyz are:-
Options
A.1 : 1 : 2
B.2 : 1 : 1
C.1 : 2 : 1
D.Not defined
Solution
(1 + x + y + z)4 → coefficient of x2y, xy2z, xyz
(4c1 3c2 1c1), (4c1 3c2 1c1), (4c1 3c1 2c1 1c1)
12 : 12 : 24
1 : 1 : 2
(4c1 3c2 1c1), (4c1 3c2 1c1), (4c1 3c1 2c1 1c1)
12 : 12 : 24
1 : 1 : 2
Create a free account to view solution
View Solution FreeMore Math miscellaneous Questions
If (4x2 + 1)n = ar(1 + x2)n-rx2r, then the value of ar is -...If , then k is equal to :...The value(s) of ′n′ for which exists is/are -...If then λ is equal to...Let x1, x2,....,xn be n observations such that Σ x21 = 400 and Σ x1 = 80 Then a possible value of n among the ...