জনতা ব্যাংক লিমিটেড এর লিখিত পরীক্ষার প্রশ্ন ও সমাধান

পদের নাম: অফিসার (ক্যাশ)

পরীক্ষার তারিখ: 13-11-2020

সমাধান দেখুন নিচে:

Q :: ~Simplify ::

[(3-x)(x+2)+(-x+4)(7x+2)-(x-y)(2x-y)]-3x² - 7x+5

= 3x + 6 - x² - 2x + 28x + 8 - 7x² - 2x - 2x² + 3xy - y² - 3x² - 7x + 5

= 20x - 13x² - y² + 3xy + 19 (Ans)

Q :: ~ An equilateral triangle is inscribed in a circle with radius 10 . Find the area of the triangle.

[ a ÷ sinA ] = 2R => a = 2 × 10 × sin60° = 10√3 cm

So , Area => [ √3 ÷ 4 ] × [ 10√3 ]² = 75√3 cm² (Ans)

Q :: ~ A salesman sells two shirts at BDT. 594 each.On one he gains 10% and On the other he losses 10%.Find the gain or loss percent on the whole.

#Solution (i) => [ Ratio method ]

10% profit => CP : SP => [ 10 : 11 ] => [ 90 : 99 ]

10% loss => CP : SP => [ 10 : 9 ] => [ 110 : 99 ]

So , Total CP = [ 110 + 90 ] = 200 tk

& Total SP = [ 2 × 99 ] = 198 tk

So , Loss = [ 200 - 198 ] = 2 tk

& Loss % = [ 2 ÷ 200 ] × 100 => 1% (Ans)

#Solution (ii) => [ Effective percentage ]

10 - 10 - [ ( 10 × 10 ) ÷ 100 ] => - 1%

So , Loss => 1% (Ans)

#Solution (iii) => [ Applying MF ]

[ 11 ÷ 10 ] × [ 9 ÷ 10 ] ×

জনতা ব্যাংক লিমিটেড এর লিখিত পরীক্ষার প্রশ্ন: