A question and answer game includes more than one answer choice to each question and each answer choice has a strategic element with a riskreward tradeoff. The magnetic layer has a thickness of 0. Each of the converters samples the analog signal based on a respective clock signal to generate a respective digital signal. The object is moved into position and placed on a resting surface whereupon the object engaging tool is disengaged when the weight of the object is transferred to the resting surface. The projection optical system forms a first projection image of the pattern on the first portion so that the third heading on the mask and the first heading on the first portion optically correspond, and forms a second projection image of the pattern on the second portion so that the third heading on the mask and the second heading on the second portion optically correspond. In use, at least one of a plurality of memory circuits is identified.