Elitmus Exam Numerical Ability Algebra

if v,w,x,y,z are non negative intergers each leass than 11,then how many distinct combinations are possible of(v,w,x,y,z) satisfy v(11^4) +w(11^3)+ x(11^2)+ y(11) +z=151001

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Elitmus Other Question

in a certain examination paper there are n questions. For j=1,2,3,.....n, there are 2^(n-1) students who answered j or more question wronlgy. if the total number of wrong answers is 4096 then the value of n is
a)12
b)11
c)10
d)9
the circle O having a diameter of 2cm, has a square inscribed in it.each side of the square is then taken as a diameter to form 4 smaller circles O'.find the total area of all four O' circles which is outside the cirle O.
a)2
b)pi-2
c)2-pi/4
d)2-pi/2