Memorization Flashcards
1
Q
20
A
1
2
Q
21
A
2
3
Q
22
A
4
4
Q
23
A
8
5
Q
24
A
16
6
Q
25
A
32
7
Q
26
A
64
8
Q
210
A
1024
9
Q
100
A
1
10
Q
101
A
10
11
Q
102
A
100
12
Q
103
A
1,000
13
Q
104
A
10,000
14
Q
105
A
100,000
15
Q
106
A
1,000,000
16
Q
10-1
A
0.1
17
Q
10-2
A
0.01
18
Q
10-3
A
0.001
19
Q
√2
A
1.4
20
Q
√3
A
1.7
21
Q
√5
A
2.2
22
Q
22
A
4
23
Q
32
A
9
24
Q
42
A
16
25
52
25
26
27
For any set of consecutive integers with an odd number of terms, the sum of the integers is always a multiple of the number of terms. For example, the sum of 1, 2, and 3 (three consecutives -- an odd number) is 6, which is a multiple of 3. For any set of consecutive integers with an even number of terms, the sum of the integers is never a multiple of the number of terms. For example, the sum of 1, 2, 3, and 4 (four consecutives -- an even number) is 10, which is not a multiple of 4.
28
The result is consistently odd, but does this hold for all perfect squares? Yes. When factored into pairs, one pair in a perfect square is always a number times itself. The existence of this “identical pair” will always make the number of factors odd for any perfect square. Any number that is not a perfect square will automatically have an evennumber of factors. Statement I must be true.
29
The sum of a set = (the mean of the set) × (the number of terms in the set)
