240×[
1
4 +(1-
1
4 )×
1
6 ]+1,
=240×[
1
4 +
3
4 ×
1
6 ]+1,
=240×[
1
4 +
1
8 ]+1,
=240×
3
8 +1,
=90+1,
=91(页);
答:第三天应该从91页开始看.
240×[
1
4 +(1-
1
4 )×
1
6 ]+1,
=240×[
1
4 +
3
4 ×
1
6 ]+1,
=240×[
1
4 +
1
8 ]+1,
=240×
3
8 +1,
=90+1,
=91(页);
答:第三天应该从91页开始看.