alleryकोड ABCD वेगळे अंक वापरतो 1–6. C=2D आणि A+C=B+D. दोन अंकी संख्या AB आणि CD 24 ने भिन्न आहेत, AB मोठ्या आहेत. A×C+B×D शोधा.
A13
B11
C15
D17
Answer & Solution
Correct answer: A. 13
टाकल्याने C=2D मिळते B=A+D.
नंतर AB−CD=11A−20D=24.
D=1,2,3 आणि भिन्न अंकांसह 1–6, फक्त A=4,D=1 कार्य करते.
कोड आहे 4521 आणि A×C+B×D=8+5=13.
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