alleryदोन-अंकी संख्या 4 त्याच्या अंकाच्या बेरजेच्या पट आहे; ते उलट केल्याने 27 जोडते. क्रमांक?
A36
B24
C48
D63
Answer & Solution
Correct answer: A. 36
दहापट a आणि एकक b साठी, 10a + b = 4(a + b) b = 2a देते आणि 9(b − a) = 27 ही संख्या 36 देते.
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