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Example: 1, __ , 3, 4, 5; mean=3
Step 1: Let N be the missing number.
Step 2: We know, Mean = (Sum of all numbers)/(Number of numbers);
Therefore, Sum of all numbers = Mean x Number of numbers
→ 1 + N + 3 + 4 + 5 = 3 x 5 → N + 13 = 15 → N = 15-13 → N = 2
Step 1: Let N be the missing number.
Step 2: We know, Mean = (Sum of all numbers)/(Number of numbers);
Therefore, Sum of all numbers = Mean x Number of numbers
→ 1 + N + 3 + 4 + 5 = 3 x 5 → N + 13 = 15 → N = 15-13 → N = 2
Grades:
Example:
If 2n = 8, then n = ?
8
3
2
Grades:
Example:
2
1
3
Answer:
1
2
3
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Example:
What are the factors of 82?
2
9
41
28
Grades:
Example: In the number 39, which digit is in ones place?
6
3
9
Grades:
Example:
0.222 + 0.546
0.875
0.768
0.197
Grades:
Example: 6 + 0 = 10
No, because 10 - 0 = 6
No, because 10 - 6 = 4
No, because 10 - 6 = 0
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Example: What is 35 rounded to the nearest ten?
40
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Example:
How many vertices does a square have?
3
4
0
Grades:
Example:
275
752
Grades:
Example:
1.8
1.5
1.3
1.6
1.9
1.9
1.8
1.6
1.5
1.3
Grades:
Example: 23 =
8
Grades:
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