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looking at the alphabet ,the letters are numbered 1-26 , such that 1 =one=15+14+5=34 (O=15, N=14, E =5 ) 2=two=20+23+15=58 (T=20, W=23, 0=15) 3=three =56 4=four=6...
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The total number of possibilities is A =263 ×103 A = 26 3 × 10 3. The number of possibilities with no repeats is B = 26 × 25 × 24 × 10 × 9 × 8 B = 26 × 25 × 24 × 10 × 9 × 8. So the number of possibilities with at least one repeat is just A − B A − B. Share. Cite.
A box contains $26$ cards, numbered from $1$ to $26$. Draw $3$ cards at random from the box. How many ways to do this so that any two of the cards drawn have numbers whose difference is at least $2...
To get count of odd or even numbers between a range, follow the process as below: Correct the Range to start and end with inclusive numbers as per question and then use following formula :
1. if I understand the question correctly, what's the probability that you select a two letters from the English alphabet, such that the second one comes after the first. Use the law of total probability: P(X) =∑k=126 P(X|Y = k)P(Y = k) = 25 26 ⋅ P(X = A) + 24 26 ⋅ P(X = B) + …. P (X) = ∑ k = 1 26 P (X | Y = k) P (Y = k) = 25 26 ⋅ P ...
The winning numbers are determined by drawing one white ball from each of the five bins of white balls numbered 1 to 69 and one red ball, i.e., the Powerball®, from a bin of red balls numbered 1 to 26. According to the Powerball® website (www.powerball.com), there are nine ways to win. The table below copied from their website describes the ...
Unsure how to handle "at least". Any help is greatly appreciated! 1.5. Suppose that you have an alphabet of 26 letters. (a) How many possible simple substitution ciphers are there? (b) A letter in the alphabet is said to be fixed if the encryption of the letter is the letter itself.
(The 2 and 3 shown above are because B and C are the second and third letter in the alphabet, respectively.) Is there some sort of formula which can be used to derive the correct numbers correlating to the Alphabet? EDIT: I am trying to go from 55 -> BC. Other Examples: $ AAA = 703 = 1*26^2 + 1*26^1 + 1*26^0 $ $ ZZ = 702 = 26*26^1 + 26*26^0 ...