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A four digit number abcd is divisible by 11 if only A.(a+b)-(c+d) is divisible by 11 B.(a-c)-(b-d) is divisible by 11 C.(a-c)-(b+d) is divisible by 11 D.(b+d)-(a+c) is divisible by 11 The coerrect answer is 'D' but how? |
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Answer» A four digit number abcd is divisible by 11 if only A.(a+b)-(c+d) is divisible by 11 B.(a-c)-(b-d) is divisible by 11 C.(a-c)-(b+d) is divisible by 11 D.(b+d)-(a+c) is divisible by 11 The coerrect answer is 'D' but how? |
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