Senior Officer 2019 [MCQ] - lessonbd

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Senior Officer 2019 [MCQ]

6. If two times of the daughter‘s age in years is included to the mother‘s age, the total is 70 and if two times of the mother‘s age is included to the daughter‘s age, the total is 95. So the Mother‘s age is,

[Senior Officer 2019 [MCQ] : 2019]

1. 38

2. 30

3. 40

4. 41

Answer

7. A student multiplied a number by 3/5 instead of 5/3. What is the percentage error in the calculation?

[Senior Officer 2019 [MCQ] : 2019]

1. 64%

2. 74%

3. 84%

4. 54%

Answer

8. Ten years ago, A was half of B in age. If the ratio of their present ages is 3 : 4, then what will be the total of their present ages?

[Senior Officer 2019 [MCQ] : 2019]

1. 30 years

2. 35 years

3. 40 years

4. 45 years

Answer

9. The size of the wooden block is 5 x 10 x 20 cm. How many such blocks will be required to construct a solid wooden cube of minimum size?

[Senior Officer 2019 [MCQ] : 2019]

1. 12

2. 6

3. 10

4. 8

Answer

10. A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paisa per m^2, is :

[Senior Officer 2019 [MCQ] : 2019]

1. Tk. 456

2. Tk. 458

3. Tk. 558

4. Tk. 568

Answer