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Box A
Box B
Box C
Box D
Box E
Memory
nbh1
8
7
9
3
9
9
nbh2
0
0
0
0
0
0
nbh3
5
1
3
4
5
6
nbh4
5
2
6
7
11
4
nbh5
4
5
16
5
9
7
nbh6
5
3
8
11
14
8
Box A
Box B
Box C
Box D
Box E
Memory
abh1
0
0
0
0
0
0
abh2
7
10
11
17
13
7
abh3
0
0
0
0
0
0
sbh1
6
12
6
16
17
8
sbh2
3
5
8
16
12
11
sbh3
10
6
7
13
7
2
Box A
Box B
Box C
Box D
Box E
Memory
abh4
10
20
35
41
27
12
abh5
10
10
26
35
18
10
abh6
10
23
22
44
30
16
sbh4
0
11
25
34
21
0
sbh5
0
4
11
19
18
2
sbh6
0
16
37
51
36
5
Box A
Box B
Box C
Box D
Box E
Memory
mbh1
0
0
0
0
0
0
mbh2
7
13
13
23
28
16
mbh3
3
7
4
8
5
10
mbh4
4
8
8
17
5
2
Box A
Box B
Box C
Box D
Box E
Memory
dbh1
10
9
6
7
15
14
dbh2
11
9
8
10
16
7
dbh3
4
6
9
22
14
4
dbh4
0
0
0
0
0
0
dbh5
16
13
14
17
15
15
dbh6
14
10
22
18
18
18

Need practiceMemory

+01234567891011121314151617181920
0DDCBCBACDD
1DECCEDDDDDBCBBBDDCCD
2CCEEEEDCEEDDDCEDDED
3AEMEDMEMEEADAAADAA
4AAABEMBBBABAAAAAA
5CBAACMBBCBAAAAAC
6BDBBBACBBBBBCCA
7DCEDBDECCBCCBC
8MDDCEDDCEDEDE
9MEAMAAEEAEAD
10BCBBCCDBBBC
11CDBBBDCCB
12CCCBBBCD
13CBCDCCB
14BCCCDD
15CDBCD
16CDDB
17BBC
18CB
19D
20

Need practiceMemory

01234567891011121314151617181920
0
1BC
2DDC
3EMAE
4BBAAB
5BBABAA
6BABBAAC
7ECCBCCCC
8EDCDCDEDD
9EDAEAAAEDE
10DDDBBDCCDCB
11BCCCDBBBCC
12DDCDDBDCBBB
13EDCCECCCCBDC
14BCDCEDCBCCCCB
15CDCCBCDCDEBCCB
16DCBBCCBBDCBCDCC
17DDCEDCDBDCCDDCCD
18CCDCDCBCCCCBCCBBC
19DCDBDDBDCCEBDCCCBD
20DDEEDDEDCDCEMDEEMDD

Need practiceMemory

×123456789101112
1CEDEDDEEDECD
2DDDDEEDECDDE
3DMAEMDMDAEAM
4EBEAMBEAAAMB
5MBBBMACBACBB
6DDBCDBCBBBDA
7DECDECBDDBDE
8EDDCEMDECDDD
9EMEMAEMEDEAA
10CEEDEBCDDCEB
11DDDCDDDBBDEC
12CDDCCCDEDBCB

Need practiceMemory

÷12345678910
1CCDBBCBBED
2EECMDCEEDC
3AAAAAEAEAA
4AAAABAAAAB
5AABAAAABBA
6AABABABAAB
7CBBBBBBCCB
8CECCCCECDC
9EAADAAAADA
10BCDBCBCCCC