How many numbers are there between 500 a...

How many numbers are there between 500 and 1000 which have exactly one of their digits as 8.

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PREMIERS PUBLISHERS-COMBINATORICS AND MATHEMATICAL INDUCTION-PROBLEMS FOR PRACTICE (Choose the correct option for the following)

How many numbers are there between 500 and 1000 which have exactly one...
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0! Is :
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If n different objects are to placed in m places then the number of wa...
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There are 5 bulbs in a room. Each one of them can be operated independ...
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If 7!/n!=7 then the value of n is:
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If n! + (n-1)! =144, then the value of n is :
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Prove ""^(n)P(r)=""^(n-1)P(r) +r. ""^(n-1)P(r-1)
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""^(7)C(3) + ""^(7)C(2)=""^(x)C(y) then x and y are:
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If 5 parallel lines intersect another set of 4 , parallel lines (not p...
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1^(2) + 2^(2) + 3^(2) + …+ 10^(2) is :
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If ""^(x^(2)-x)C(7)=""^(x^(2)-x)C(5) then x is :
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A photographer wants to take a photo of 3 students out of 6 students ...
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In 3 fingers, the number of ways five rings can be worn in...............
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There are 8 points in a plane, no three of them are collinear .The num...
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10 students compete in a race. In how many ways first two prizes be g...
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How many lines can be drawn given six points of which 3 are collinear?
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Find the odd one out:
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Among the following, find which one cannot be no. of digonals of a pol...
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Find the correct statement:
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Find the correct statement:
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Find the incorrect statement:
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