Subject
Govt.Jobs
Topic
সিকিউরিটি প্রিন্টিং কর্পোরেশন লি. সহকারি ব্যবস্থাপক (সাধারণ)-২৬.১১,২০২১
A number consists of 3 digits whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. The number is-
A number consists of 3 digits whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. The number is-
ক)
253খ)
352গ)
145ঘ)
370Explanation
ধরি ,একক স্থানীয় অংক =x দশক " " =y এবং শতক " "=z অতএব ,সংখ্যাটি =100z+10y+x প্রশ্নমতে ,x+y+z =10..........(i) এবং x+y+z=10.......(ii) অতএব , (i) y+y=10 বা,2y =10 বা,y=5 অতএব , (ii) x+z=5.........(iii) আবার , (100x+10y+z)-(100z)+10y+x)=99 বা,99x-99z=99 বা,x-z=1.........(iv) (iii) +(iv) 2x=6 বা,x=3 অতএব ,(iii) z=5-3 z=2 অতএব ,সংখ্যাটি =100.2+10.5+3=253Related questions
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