Question

the left and right page numbers of an open book are two consecutive integers whose sum is 193

Answer 1

Let x be the left page number, then x+1 is the right page number. According to conditions of the question, $x+(x+1)=193, \,\text{then}$$2x=192,$ hence $x=96$ . The left page number is 96, the right page number is 97. Answer: 96, 97.