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If A = 1, B = 3, C = 5, what is the value of F?
9
11
13
15
11
Apply the formula 2n - 1, where n is the positional value of the letter in the English alphabet (A=1, B=2, C=3, F=6).
Apply the formula 2n - 1, where n is the positional value of the letter in the English alphabet (A=1, B=2, C=3, F=6).
Analyze the given pattern
Map the alphabetical position of each letter: A=1, B=2, C=3. The given values are A=1, B=3, C=5. This indicates a formula where the value is calculated as (Position * 2) - 1.
Apply the formula to F
The letter F is the 6th letter of the alphabet. Using the derived formula: (6 * 2) - 1 = 12 - 1 = 11.
A: 9 is incorrect as it follows (52-1) for E; C: 13 is incorrect as it follows (72-1) for G; D: 15 is incorrect as it follows (8*2-1) for H.
B is correct because the sequence follows the rule (Position * 2 - 1), and for the 6th letter F, the value is (6 * 2 - 1) = 11.
Whenever you see letter-to-number mapping, always write down the positions (1-26) first; then check for simple operations like +N, -N, or 2N ± K.
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