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7756 . $x + y = 8, x y = = 15$ হলে

A. 4
B. 8
C. 9
D. 16

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Answer: Option D

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7757 . একটি ফাংশন $f : R \to R, f (x) = 2 x + 1$ দ্বারা সংজ্ঞায়িত হলে $f^{- 1} (2)$ এর মান কত?

B. $\frac{1}{2}$
C. 5
D. 1

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Answer: Option B

Explanation:

ধরি, y = f (x) = 2 x + 1 এখন,y=f (x) {∴x=f}^{- 1} (y) প্রদত্ত রাশি, y=2x+1 \Rightarrow 2 x + 1 = y \Rightarrow 2 x = y - 1 \Rightarrow x = \frac{y - 1}{2} \Rightarrow f^{- 1} (y) = \frac{y - 1}{2} তাহলে, f^{- 1} (2) = \frac{2 - 1}{2} = \frac{1}{2}

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7758 . What is factor of $x^{3} - 3 x^{2} + 4 x - 4 ?$

A. $(x - 2) (x^{2} - x + 2)$
B. $(x - 2) (x^{2} + x - 2)$
C. $(x - 2) (2 x^{2} - x + 4)$
D. $(x^{2} - 2) (x + 2 x + 4)$

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Answer: Option A

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7759 . ${(8 x)}^{0} + 8 x^{0}$ এর মান নিচের কোনটি?

A. 8
B. 2
C. 16
D. 9

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Answer: Option D

Explanation:

We know that. a^0 = 1

So,

(8x)^o = 1

8x^0 = 8×1 = 8

1 + 8 = 9

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7760 . x>0 এর $x^{2} = 4 x$ হলে x এর মান কোনটি?

A. 4
B. 3
C. 2

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Answer: Option A

Explanation:

x^2= 4x

বা, x=4x/x

বা, x=4.

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7761 . $p^{2} + 7 p + c$ রাশিটি p-5 দ্বারা বিভাজ্য হলে c- এর মান কত হবে?

A. -60
B. 60
C. 30
D. -30

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Answer: Option A

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উপজেলা/থানা শিক্ষা অফিসার (25-06-2010)

7762 . $a + b = 7, a b = 10$ হলে ${(a - b)}^{2} = ?$

A. 9
B. 19
C. 29
D. 39

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Answer: Option A

Explanation:

(a - b)² = (a + b)² - 4ab

= 7² - 4×10

= 49 - 40

= 9 .

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ডাক বিভাগের পোস্টাল অপারেটর-০৩.০৬.২০১৬

7763 . $x^{4} - 3 x - 2$ কে $x + 1$ দ্বারা ভাগ করলে ভাগশেষ কি হবে?

A. 1
B. 2
C. 3
D. 4

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Answer: Option B

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জনপ্রশাসন মন্ত্রণালয় ।। প্রশাসনিক কর্মকর্তা (23-06-2016)

7764 . যদি a+b+c =5 $a^{2} + b^{2} + c^{2} = 9$ হয়, তবে ab+bc+ca = কত?

A. 16
B. 8
C. 34
D. 12

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Answer: Option B

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7765 . $9 - 12 x + a x^{2}$ একটি পূর্ণসংখ্যা হলে, a এর মান-

A. 4
B. 6
C. 8
D. -6

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Answer: Option A

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7766 . $x^{0} + y^{0} =$ কত?

B. 1
C. 2
D. x+y

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Answer: Option C

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7767 . যদি $f (x) = x^{3} + 9 x^{2} - 3 x - 6$ য়, তবে $f (- 2) =$ কত?

A. 28
B. -44
C. 32
D. 26

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Answer: Option A

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7768 . $x^{2} - 6 x + 9 = 0$ সমীকরণের মূল কয়টি?

A. 1
B. 2
C. 3
D. 4

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Answer: Option B

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১৩ তম শিক্ষক নিবন্ধন পরীক্ষা (স্কুল সমপর্যায়-২) (12-06-2016)

7769 . $2 x^{3} - 5 x^{2} + 4 = 0$ সমীকরণের x এর সহগ কত?

A. -5
C. 2
D. 4

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Answer: Option B

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7770 . If $10^{2 y} = 25,$ then $10^{- y}$ equals:

A. $\frac{1}{50}$
B. $\frac{1}{625}$
C. $\frac{1}{2}$
D. $\frac{1}{5}$

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Answer: Option D

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যুব ও ক্রীড়া মন্ত্রণালয়ের যুব উন্নয়ন অধিদপ্তর | ক্যাশিয়ার | ০৪.০৫.২০১৮

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