MCQ
The formula to find mean by direct method is
- A$A+\bar{d}$
- B$\frac{\sum f_i d_i}{\sum f_i}$
- C$\frac{\sum f_i d_i}{\sum d_i}$
- D$\frac{\sum f_j x_i}{\sum f_i}$
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Assertion $(A)$
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Reason $(R)$
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| If two tangent are drawn to a circle from an external point then they subtend equal angles at the centre. | A parallelogram circumscribing a circle is a rhombus. |