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babymother [125]

4 years ago

12

Evaluate (491) square in the form of (a-b) square

1 answer:

Tomtit [17]4 years ago

6 0

Step-by-step explanation:

$(491)^{2} \\ \\ = (500 - 9)^{2} \\ \\ = ( {500})^{2} - 2 \times 500 \times 9 + ( {9})^{2} \\ \\ = 250000 - 9000 + 81 \\ \\ = 16000 + 81 \\ \\ = 16081 \\ \\ \huge\purple{ \boxed{\therefore (491)^{2}= 16081}}$

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Suppose a deck of cards contains 13 cards:

ira [324]

Answer:

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Step-by-step explanation:

Given

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This is calculated as:

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So, we have:

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Take LCM

$P(X \ge 1) = \frac{39 -14}{39}$

$P(X \ge 1) = \frac{25}{39}$

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