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Office of The Chief Inspector of Boilers is a Government organization in Bangladesh. The boiler has published Exam Question Solution 2021. See detail of the Office of The Chief Inspector of Boilers MCQ & Written Exam Question Solution 2021 below.
Organization Name: Office of The Chief Inspector of Boilers
1. Driver-02
2. Office Sohayok-21
Exam Time: 3.00 PM
Total Candidate: 16172
Written Math Solution:
১০. (a+1/a)2 = 3 হলে, প্রমাণ করুন যে, a3 + 1/a3 =0
উত্তরঃ
Given, (a+1/a)2 = 3
> (a+1/a) = √3
LHS = a3 + 1/a3 = (a+1/a)3 -3 a.1/a ((a+1/a))
> (√3 )3 -3 √3
>3√3 -3 √3 = 0 (Proved)
১১. 3(a2+2a)2 -22(a2+2a)+40 কে উৎপাদকে বিশ্লেষণ করুন।
উত্তরঃ (a2 + 2a -4) (3a2 +6a -10)
১২. বার্ষিক ১০.৫০% মুনাফায় ৫০০০ টাকার ২ বচরের চক্রবৃদ্ধি মুনাফা নির্ণয় করুন।
উত্তরঃ 1105.125
১৩. পিতা ও পুত্রের বয়সের সমষ্টি ৭৪ বছর। তাদের বয়সের অনুপাত ১০ বছর আগে ছিল ৭:২। ১০ বছর পর বয়সের অনুপাত কত হবে?
উত্তরঃ 31: 16