A number consists of 3 digits whose sum is 10. The middle digit equal to the sum of the other two and the number will be increase by 99 if its are reversed. What is the number ?

A number consists of 3 digits whose sum is 10. The middle digit equal to the sum of the other two and the number will be increase by 99 if its are reversed. What is the number ?

A 145

B 253

C 370

D 352

Solution

Correct Answer: Option B

Solution:

শুধুমাত্র b) এবং d) এরই মাঝখানের অঙ্ক অন্য দুটোর অংকের যোগফলের সমান ।

এখন b) এর ক্ষেত্রফল 253 + 99 = 352 যা 253 এর উল্টা ।