alleryસંખ્યા 52x ને 3 વડે વિભાજ્ય બનાવવા માટે અંક x ની લઘુતમ કિંમત કઈ હોવી જોઈએ?
A3
B1
C2
D0
Answer & Solution
Correct answer: C. 2
અંક 5 અને 2 નો સરવાળો 7 થાય છે, અને તેમાં 2 ઉમેરતાં 9 મળે છે જે 3 વડે વિભાજ્ય છે; 0 અને 1 ઉમેરતાં અનુક્રમે 7 અને 8 મળે છે.
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