CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

The number of integral solutions of the equation x+y+z+t=20, such that x0,y1,z2,t3, is


A
680
loader
B
720
loader
C
640
loader
D
560
loader

Solution

The correct option is A 680
Let X=x,Y=y1,Z=z2,T=t3 then X+Y+Z+T=14 where X,Y,Z,T0

Required number of solutions is number of non negative integral solutions  for X+Y+Z+T=14 =14+41C41=17C3=680

Mathematics

Suggest Corrections
thumbs-up
 
0


similar_icon
Similar questions
View More


similar_icon
People also searched for
View More



footer-image