exam
Maths Puzzle
Numerical Ability
How many different four digit numbers can be formed from the digits 0 through 9 if the first digit must be even and cannot be zero?
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exam Other Question
factor
8x^3y^5+16y^3x^5-40x^4y^4
Subtract.
4x - 2x to the 2nd power + 4x to the 3rd power FROM 4x to the 3rd power + x - 3x squared