Chapter 6 Number Play - Part 4

If the sum of a two-digit number and the number obtained by reversing its digits is 99, what is the sum of its digits?

Type: MCQ • Marks: 1
If the sum of a two-digit number and the number obtained by reversing its digits is 99, what is the sum of its digits?
Options
A. 8
B. 10
C. 11
D. 9
Explanation
Since (ab + ba) = 11(a + b) = 99, we get (a + b) = 99 / 11 = 9.
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Class 7th Ganita Prakash 1

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