self Maths Puzzle

If 3*2=46 2*5=104 4*3=68 then 4*7=?

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self Other Question

A computer printer produces 176400 lines in a given day. If the printer is in operation for 7 hrs during the day how many lines did it print per minute? You have plastic chips in your hand which are red on top and blue on the bottom. If you dropped 8 plastic chips, how many would probably land with the red side up?