This is a question from slot 1: How many three-digit numbers are greater than 100 and increase by 198 when the three digits are arranged in the reverse order? How is the answer 70?

Question

This is a question from slot 1: How many three-digit numbers are greater than 100 and increase by 198 when the three digits are arranged in the reverse order?  How is the answer 70?

Mohammed Haris · Answer

I wrote 7 , taking in to account only digits with 9 in middle

Aayushi Vats · Answer

Thanks a lot

Soham Soham · Answer

I messed up this one too, but the answer is 70. z-x = 2, and since both z and x != 0, it makes z = 3,4,5,6,7,8,9. Edit : 70 because y can take 10 values for every z and x pair.

This is a question from slot 1: How many three-digit numbers are greater than 100 and increase by 198 when the three digits are arranged in the reverse order? How is the answer 70?

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