Digit in unit's place of a two digit number is 3 more than the digit in ten's place. Five times the product of the digits is same as twice the same number. What is the number?
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let the one's digit be y and tens digits be x.
Number=10+y
then,x=3y ........................(1)
Reversed number=10y+x
A.t.q:- (10x+y) - (10y+x)
=36 put x=3y in eq (1).
=> 9x-9y=36
=> x-y= 4............................(2)
=> 3y-y=4
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• • 2y = 4x=3y
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• • x=6 , y=2
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• • Number = 62
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