10. On the first day of October an English teacher suggests to his students that they
must read five pages of a novel and every day thereafter increase their daily
reading by two pages. If his students follow this suggestion, then how many pages
they will read on the 31st of October?
A. 65
B. 66
C. 67
D. 68
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Answer:
65
Step-by-step explanation:
A31= 5 + (31-1) 2
= 5+ (30) 2
= 5+ 60
= 65