Answers

2015-07-17T20:10:04+05:30
Let the original number be 10a + b.
given, a+b=7
now, according to question,
10b+a<4(10a+b)
solving,
a>42/45
b<273/45
so a can be any natural number from 1 to 9,
b can be any whole number less than 6.

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thank u
welzzo! hey, is the answer given to this question? is it given like this?