2003 Contest Item Difficulty
for the AMC 10 A & B
CONTEST 10A Item Difficulty
ITEM
A
B
C
D
E
OMITS
?
1
5.96
22.28
7.43
41.19
*
4.66
18.47
0.01
2
0.45
86.08
*
1.63
8.62
0.34
2.87
0.01
3
4.98
23.29
4.57
38.84
*
3.55
24.76
0.01
4
46.62
*
1.90
2.99
30.97
0.92
16.58
0.01
5
6.88
55.59
*
2.00
1.14
1.01
33.36
0.01
6
16.19
17.31
24.84
*
6.17
8.38
27.09
0.02
7
14.44
23.25
*
10.31
16.84
4.07
31.07
0.02
8
12.15
5.52
3.10
2.75
64.12
*
12.33
0.03
9
19.32
*
5.07
15.67
16.06
1.00
42.88
0.01
10
5.90
5.02
7.95
12.38
38.92
*
29.80
0.02
11
2.64
1.52
1.77
2.14
65.76
*
26.16
0.02
12
26.54
*
28.05
2.38
9.58
7.60
25.84
0.01
13
58.62
*
2.89
2.78
1.92
0.53
33.25
0.01
14
16.90
*
11.77
4.60
8.78
9.84
48.09
0.02
15
6.95
16.92
42.07
*
5.28
6.26
22.51
0.01
16
7.72
8.05
26.69
*
2.08
6.37
49.09
0.01
17
4.68
9.33
*
2.47
2.84
3.81
76.86
0.01
18
6.18
6.95
*
2.36
6.17
7.02
71.30
0.01
19
2.97
3.24
5.67
*
1.73
2.20
84.19
0.01
20
4.65
2.61
3.34
3.44
4.70
*
81.24
0.01
21
5.69
4.77
10.87
18.77
*
22.55
37.34
0.02
22
7.90
23.58
*
5.11
2.04
0.90
60.45
0.01
23
3.05
2.87
8.95
*
5.63
6.42
73.08
0.01
24
1.80
3.70
6.11
5.79
43.16
*
39.43
0.01
25
1.99
4.84
*
3.08
1.93
2.16
86.00
0.01
(*) Correct Response
(?) Response the computer was unable to read due to incomplete erasures or two answers marked in the same column
CONTEST 10B Item Difficulty
ITEM
A
B
C
D
E
OMITS
?
1
0.22
1.02
96.35
*
0.92
0.47
1.02
0.00
2
0.45
1.16
12.05
78.44
*
3.39
4.49
0.01
3
3.73
68.87
*
6.20
5.70
0.89
14.60
0.00
4
82.91
*
2.44
2.75
0.85
1.83
9.21
0.00
5
3.20
3.86
37.43
*
6.84
13.40
35.26
0.01
6
10.41
14.79
3.21
38.44
*
4.93
28.20
0.02
7
4.37
53.70
*
2.97
7.49
2.50
28.97
0.01
8
1.87
11.27
*
4.04
7.02
4.35
71.44
0.01
9
2.75
27.76
*
3.91
3.66
2.91
58.99
0.01
10
2.63
3.30
33.34
*
9.72
4.66
46.34
0.01
11
50.70
*
4.87
3.30
2.35
9.30
29.47
0.01
12
4.61
4.61
60.65
*
1.75
3.20
25.18
0.00
13
24.24
5.75
3.12
7.37
13.20
*
46.29
0.03
14
10.40
4.05
2.26
30.29
*
1.35
51.64
0.01
15
15.46
19.87
2.72
8.07
27.82
*
26.03
0.02
16
2.49
2.49
4.66
5.54
48.22
*
36.59
0.00
17
1.69
15.89
*
7.06
3.03
1.38
70.93
0.01
18
3.50
14.21
2.50
15.98
*
15.91
47.90
0.00
19
2.08
2.41
4.00
4.52
4.71
*
82.27
0.01
20
2.45
3.42
4.22
19.08
*
11.02
59.80
0.01
21
16.29
3.20
5.24
*
12.94
4.57
57.75
0.01
22
13.81
23.09
*
16.51
6.15
4.22
36.21
0.01
23
3.41
3.19
4.06
10.86
*
3.78
74.69
0.01
24
0.84
1.24
15.86
1.31
0.84
*
79.90
0.00
25
9.75
24.38
*
9.21
2.96
2.66
51.03
0.01
(*) Correct Response
(?) Response the computer was unable to read due to incomplete erasures or two answers marked in the same column

This AMC Web Page was last updated on 4/16/2003