alleryકોડ ABCD અલગ-અલગ અંકોનો ઉપયોગ કરે છે 1–6. C=2D અને A+C=B+D. બે-અંકની સંખ્યાઓ AB અને CD 24થી અલગ છે, જેમાં AB મોટી છે. A×C+B×D શોધો.
A13
B11
C15
D17
Answer & Solution
Correct answer: A. 13
C=2D મુકવાથી B=A+D મળે છે.
પછી AB−CD=11A−20D=24.
D=1,2,3 અને અલગ-અલગ અંકો સાથે 1–6, માત્ર A=4,D=1 કામ કરે છે.
કોડ છે 4521 અને A×C+B×D=8+5=13.
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