Question
Find the sum of numbers between 1 to 140, divisible by 4.
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| Class interval | 10 - 20 | 20 - 40 | 40 - 60 | 60 - 80 | 80 - 100 |
| Frequency | 14 | f | 32 | 24 | 19 |
|
Class interval
|
0-10
|
10-20
|
20-30
|
30-40
|
40-50
|
50-60
|
60-70
|
Total
|
|
Frequency
|
$f_1$
|
5
|
9
|
12
|
$f_2$
|
3
|
2
|
40
|