Find the value of a in the following:

7 × a = 49

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Solution

The correct option is B 7
7 x 7 = 49
Using division equation, it can be written as:
49 ÷ 7 = 7
So, a = 7

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Find the value of ' $n$ ' in the following:
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A and B are two mutually exclusive and exhaustive events. If $P (A) = \frac{1}{7}$ find the value of $49 \times P (B)$ .

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