Question
Find the product:
$75\text{x}^2\text{y}\big(\frac{3}{5}\text{xy}^2+\frac{2}{5}\text{x}\big)$
$75\text{x}^2\text{y}\big(\frac{3}{5}\text{xy}^2+\frac{2}{5}\text{x}\big)$
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| No. of saplings (Scores) $x_i$ | No. of students (frequency) $f_i$ | $f_i$ × $x_i$ |
| 1 | 4 | 4 |
| 2 | 6 | __ |
| 3 | 12 | __ |
| 4 | 8 | __ |
| N = __ | $\sum f_i \times x_i=$ __ |
