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Officer-2019 [MCQ]

51. If logx 9/16 = - -½ the value of the base is__

[Officer-2019 [MCQ] : 2019]

1. 16/9

2. 9/16

3. 256/81

4. 81/256

Answer

52. If cos A + cos^2A = 1, then the value of the expression (cos^2A + cosA) is—

[Officer-2019 [MCQ] : 2019]

1. 1

2. 1/2

3. 2

4. 3

Answer

53. The difference in taka between simple and compound interest at 5% annually on a la sum of Tk. 5000 after 2 years is—

[Officer-2019 [MCQ] : 2019]

1. 12.5

2. 25

3. 50

4. 600

Answer

54. For y = -2x-8, what is the least value of x for which y is less than 9?

[Officer-2019 [MCQ] : 2019]

1. –9

2. –8

3. –7

4. -6

Answer

55. A group of 7 members having a majority of boys is to be formed out of 7 boys and 4 girls. The number of ways the group can be formed is__

[Officer-2019 [MCQ] : 2019]

1. 80

2. 100

3. 90

4. 110

Answer