A
A two digit number contains the bigger at ten's place. The product of the digits is 27
and the difference between two digits is 6. Find the number.
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Answer:
Let the bigger number be 'a'.
the smaller number is 'a-6'
Then the two-digit number = 10a + a - 6 = 11a - 6
according to question
a x (a-6) = 27
a² - 6a = 27
a² - 6a - 27 = 0.
a-9)(a+3) = 0
a = 9 or a = -3
Now
When a = -3,
the two digit number = 11a - 6 = -33 -6 = -39
This isn't the possible .
So, we interchange the digit
When a = 9,
the two digit number = 11a - 6 = 99 -6 = 93
Therefore, this is the possible two digit number required as the bigger number is at ten's place.
Therefore, the 2-digit number is 93.
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