A B C D E

1 1 2 3 5

8 13 2 1 34 55

89 144 233 377 6 10

987 1597 2584 4 18 1 6765

……

See the pattern?

The coordinates of multiples of 3 are

D 1，B3 C2，A4，E5，

D6，C7，B8，A9，E 10，

D 1 1，C 12，B 13，A 14，E 15，

D 16，C 17，B 18，A 19，E20……

It can be inferred that the ordinate of the100th number is 20 and the abscissa is e, because the100th number can be divisible by 5.

The number of times students clap their hands, that is, the number of times A appears, is 4 times.

In addition, it is found that the number of multiples of 3 in the position where Fibonacci number appears is 4, 8, 12, 16, respectively. ...

I don't know if my answer is correct. I think this question should focus on the ability of observation and induction. I'm a little dizzy here ...