A game cube is numbered 1 through 6. Cory rolls the cube 150 times. How many times should Cory expect the cube to land on an even number?

1010: 3030

is it i think

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.