Elitmus Exam Numerical Ability Number System

x is a whole number then probability of log(3)^x is whole number where x is 0

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Elitmus Other Question

abc is 3-digit number in which atleast 2 digits are equal. How many number can formed from this combination
option
a) 225
b) 234
c) 243
d) 250
if x>y>10 and difference between cube of x and cube of y is D then D-1 is

a)divisible by x
b)divisible by y
c) both a and b
d)multiple of 3