Question

What is the two-digit number whose first digit is a and the second digit is b?. the number is greater than 9. i. the number is multiple of 51. ii. the sum of the digits a and b is 6?

Answer 1

$First \:digit = Ten's \:place\:digit = a$

$Second \:digit =unit \:place\:digit = b$

/* According to the problem given */

$i ) The \: number \:is \: greater \:than \:9$

$ii ) The \:number \:is \:multiple \:of \:51$

$iii) Sum \:of \:the \:digits = 6$

/* From above conditions,we easily conclude that*/

$\red{The \:two \:digit \:number}\green{ = 51 }$

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