MBA Exam Numerical Ability Profit and Loss

Find the number of way, you can fill 3x3 grid (with having four corner a,b,c,d) and if you have 3 white and 6 black marbelstag me

1) 9C3
2) 6C3
3) 9C3+6C3
4) (9C3+6C3)/3!

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MBA Other Question

Suppose the product of n consecutive integers is x.(x+1) (x+2) (x+3) .......(x+( n-1) )=1000, then which of the following cannot be true about the number of terms n

1) The number of terms can be 16
2) The number of terms can be 5
3) The number of terms can be 25
4) The number of terms can be 20
xy is a number formed by appending y to x , where x is an n- digit natural number and y is a single digit natural number. find the remainder when xy - 9x +6y +3 is divided by 69, if xy is a multiple of 69

1) 0
2) 1
3) 2
4) 3