TCS Company Numerical Ability Number System

What is the maximum value of n such that 146! is perfect divisible by 5n ?

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TCS Other Question

There is a 3*3 matrix . you have 2 colors red and blue. In how many ways u can fill the colors in the boxes so that if u rotate the matrix by 180 degree we get the same matrix ? find the greatest number that will divide 148 246 and 623 leaving remainders 4 6 and 11 respectively