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On interchanging two digits of the number 2643, it decreased by 180. Which two digits of 2643 might have been interchanged? (a) 2 and 6 (b) 4 and 3 c) 6 and 3 (d) 6 and 4​
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On interchanging two digits of the number 2643, it decreased by 180. Which two digits of 2643 might have been interchanged?

(a) 2 and 6 (b) 4 and 3 c) 6 and 3 (d) 6 and 4​

User Pau Kiat Wee
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Answer: D. 6 and 4

Step-by-step explanation:

2643 - 180 = 2463 the 6 changes to a 4, and the 4 changes to a 6.
User Kumuluzz
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