alleryदो अंकों की संख्या अपने अंकों के योग का 4 गुना है; इसे उलटने पर 27 जुड़ जाता है। संख्या?
A36
B24
C48
D63
Answer & Solution
Correct answer: A. 36
दहाई a और इकाइयों के लिए b, 10a + b = 4(a + b) b = 2a देता है, और
9(b − a) = 27 संख्या 36 देता है।
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