alleryબે-અંકની સંખ્યા તેના અંકના સરવાળા કરતાં 4 ગણી છે; તેને ઉલટાવીને 27 ઉમેરે છે. નંબર?
A36
B24
C48
D63
Answer & Solution
Correct answer: A. 36
દસ a અને એકમો માટે b, 10a + b = 4(a + b) b = 2a આપે છે
9(b − a) = 27 નંબર આપે છે 36.
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