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Question 19
Number S is obtained by squaring the sum of digits of a two-digit number D. If difference between S and D is 27, then the two-digit number D is
Solution
Consider the options:
24: (Square of sum of digits - the number) = 36 - 24 = 12
54: (Square of sum of digits - the number) = 81 - 54 = 27
34: (Square of sum of digits - the number) = 49 - 34 = 15
45: (Square of sum of digits - the number) = 81 - 45 = 36
So, option b) is the correct answer.
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