There is a five digit number. The fourth digit is 4 greater than the second digit, while the third digit is 3 less than the second digit. The first is thrice the last digit. The number contains three pairs whose sum is 11. Find the number.
A
35291
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B
65292
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C
64182
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D
95293
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Solution
The correct option is B65292 Let five digit number is ABCDE. ∴A=3E.....(i) D=B+4......(ii) C=B−3.....(iii) From equation (i), E can be 1, 2 or 3 From equations (ii) and (iii). B can be 3, 4 or 5. So, A can be 3,6or9 B can be 3,4 or 5 C can be 0,1 or 2 D can be 7,8 or 9 E can be 1, 2 or 3 Now, sum of three pairs is 11. This condition is satisfied by the number 65292.