A number consists of two digits. The sum of digits is 8. If digits are interchanged, the new number becomes 36 less than the original number. The number is?
- 62
- 44
- 53
- None of these
Explanation
Let the two-digit number be 10x + y, where x is the tens digit and y is the unit digit.
Given: x + y = 8
If digits are interchanged, the new number is 10y + x.
Given condition: (10x + y) - (10y + x) = 36
Simplifying: 9x - 9y = 36 → x - y = 4
Solving x + y = 8 and x - y = 4, we get x = 6, y = 2.
The number is 62.
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- 25
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- None of these
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- 10x = - 3
- 2x = - 27
- 2x = 27
- None of these
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- 1, 4, -21
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اس سوال کو وضاحت کے ساتھ پڑھیں
- 2/x + 12/(x +5)
- 3/x + 22/(x +5)
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- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
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