### খুলনা বিশ্ববিদ্যালয়

#### B ইউনিট

Tk. 2800

Tk. 2456

Tk. 2938

Tk. 2756

Tk. 23.49

Tk. 29.25

Tk. 28.25

Tk. 32.00

##### 3. An investor has a total capital of TA. 13,00,000 He invested a part of it in 3 percent annual interest and the reminder at 4 percent annual interest rate. If his annual interest amount was Tk. 44.00 how much did he invest in each?

Tk. 5,00,000 in 3% and 8,00,000 in 4%

Tk. 4,00,000 in 3% and 9,00,000 in 4%

Tk. 9,00,000 in 3% and 4,00,000 in 4%

TK. 8,00,000 in 3% and 5,00,000 in 4%

178

182

174

173

4

-4

16

+- 4

7 degree

28 degree

98 degree

14 degree

80

70

56

66

08

09

11

10

Y-6

2Y-6

Y/2-6

3Y/2-6

3/4

4/3

5/4

1/4

(a+bb+c)/6

(a+b+c)/4

(a +b+c)/3

(a+b+c)/2

12/35

5/7

10/7

35/12

Tk, 23.49

Tk. 29.25

Tk. 28.25

Tk,. 32.00

Tk. 2800

Tk, 1456

Tk, 2938

Tk, 2756

##### 15. Select the correct answer choice of the following Question : "An investor has a total capital of TA. 13,00,000. He invested a part of it in 3 percent annual interest and the reminder at 4 percent annual interest rate. If his annual interest amount was Tk. 44,000 how much did he invest in each?"

Tk, 5,00,000 in 3% and 8,00,000 in 4%

Tk. 4,00,000 in 3% and 9,00,000 in 4%

Tk. 9,00,000 in 3% and 4,00,000 in 4%

Tk. 8,00,000 in 3% and 5,00,000 in 4%

178

182

174

173

80

70

56

66

08

09

11

10

Y-6

2Y-6

Y/2-6

3Y/2-6

3/4

4/3

5/4

1/4

(a+b+c)/6

(a+b+c)/4

(a+b+c)/3

(a+b+c)/2

12/35

5/7

10/7

35/12

e

2e

3e

4e

-24

24

-32

32

##### 26. ${\int }_{0}^{1}\frac{dx}{\sqrt{2x-{x}^{2}}}$ এর মান কত?

$\mathrm{\pi }$

$\frac{\mathrm{\pi }}{2}$

$2\mathrm{\pi }$

$\frac{\mathrm{\pi }}{4}$

9

6

1

3

##### 28. যদি $\stackrel{\to }{a}=\stackrel{^}{i}+2\stackrel{^}{j}-3\stackrel{^}{k}$ এবং $\stackrel{\to }{b}=3\stackrel{^}{i}-\stackrel{^}{j}+2\stackrel{^}{k}$ হয়, তবে $\stackrel{\to }{a}+\stackrel{\to }{b}$ এবং $\stackrel{\to }{a}-\stackrel{\to }{b}$ এর মধ্যবর্তী মান হবে-

$45°$

$90°$

$30°$

$120°$

50

48

49

100

36000

12000

10,00000

41420

20x-y-30=0

13x-y-25=0

5x-y+25=0

30x-2y-20=0

##### 32. একটি সরলরেখা (8, -2) বিন্দু দিয়ে অতিক্রম করে। মূল বিন্দু দিয়ে এর উপর লম্ব আকাঁ হল। লম্বটি যদি x অক্ষের সাথে $45°$ কোণ উৎপন্ন করে তাহলে লম্বটির দৈর্ঘ্য কত?

$2\sqrt{3}$

$3\sqrt{2}$

2

5

{3, -2}

{-2, 3}

{2, -2}

{-4, 0}

3/32

1/4

5/16

1/2

264

246

256

258

##### 36. নিচের চিত্রে $f:A\to B$ এবং $g:B\to C$ হলে কোন উত্তরটি সঠিক?

(gof)(1)≠ (gof)(3)

(gof)(1)=(gof)(3)

(gof)(2)≠(gof)(3)

(gof)(2)=(gof)(3)

##### 37. নিচের প্রবাহ চিত্রের মাধ্যমে কোন ফল নিণংয় করা যাবে?

2+4+6+... ... ... +2N

2✕4✕6 ... ... ...✕2N

4+16+36+ ... ... ... +$\left(N-1{\right)}^{2}$

4+16+36+ ... ... ...$\left(2N{\right)}^{2}$

RightAns: 0 | WrongAns: 0 | Result: 0/0