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3 years ago

In how many ways can a password be made using four letters from the 26 letter English alphabet letters can’t be repeated

Mathematics

1 answer:

valentinak56 [21]3 years ago

7 0

Answer:

If you go by normal method, no. of possible passwords that can be created with 26 alphabets are 26X26X26X26 = 456,976

Step-by-step explanation:

. If you do not want to repeat the alphabets, you can use combinations. i.e. C(26, 4) or 26C4 = 358,800 ways

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Answer:

Step-by-step explanation:

(5r-4)(2r-6r+4)

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5r-4+2r-6r+4

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3 years ago

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irinina [24]

Answer:

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Step-by-step explanation:

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2 years ago

If a runner was traveling with a velocity of 4 m/s north and had a displacement of 2500 m, how long was he running?

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Step-by-step explanation:

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4 0

3 years ago

A car was originally purchased in January 2010 for 27000 dollars. The car depreciates at a rate of 18% every year.

Maksim231197 [3]

Answer:

Number of year(n) = 3.4 year (Approx)

Step-by-step explanation:

Given:

Purchase value of car = $27,000

Depreciation rate per year (d) = 18% = 0.18

Future price = half of its original value = $27,000 / 2 = $13,500

Find:

Number of year(n) = ?

Computation:

$Future price =Purchase value(1-d)^n\\\\13,500=27,000(1-0.18)^n\\\\0.5=(0.82)^n\\\\n=3.444(Approx)$

Number of year(n) = 3.4 year (Approx)

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3 years ago