Some Questions From Samples Appear on Math Tests
Some sample questions and answers for annual standardized mathematics test for seventh and eighth graders in New York State reappear on real exams now being administered; officials at State Education Department and CTB/McGraw-Hill, test publisher, offer no explation for what caused gaffe, which gives about 400,000 students advance peek on actual test questions; promise to adjust for mistake in scoring exams; this year's tests are first that will be used to measure school performance in New York City under federal No Child Left Behind law (M)