On average—say, over a century or two—how often does a Friday the 13th occur? The answer is closest to once every: A) 5 months B) 6 months C) 7 months D) 8 months E) not any of above
How turns the Earth: From high noon on one day to high noon the next day, which of these is cloest to howmuch the earth spins around its north-south axis? a) 359° b) 360° c) 361°