For any 2-digit number 'ab' (a > b), (ab - ba) divided by (a - b) always equals:

Type: MCQ • Marks: 1

A. 1

B. 9

C. 11

D. 10

Explanation

(10a+b - 10b-a) / (a-b) = 9(a-b) / (a-b) = 9.

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Class 7th Ganita Prakash 1

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