according to the following sequence for first 2021th terms how many even numbers are there? 1,2,3,5,8,13,…,

2 bình luận về “according to the following sequence for first 2021th terms how many even numbers are there? 1,2,3,5,8,13,…,”

1. quy luật

   1+1+2=4,1+2+4=7,2+4+7=13,4+17+13=24

   ⇒the first 2021th term with an even number is

   2021:2=1010(dư 1)(even)

   answer:1010

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   Trả lời
2. quy luật dãy số:

   1+1+2=4

   1+2+4=7

   2+4+7=13

   4+17+13=24

   ⇒the first 2021th term with an even number is:

   2021:2=1010(dư1)(even)

   answer:1010

   Trả lời