Which of the following is necessary to maintain the number of individuals of species and to prevent their extinction?

150 individuals attended a marathon held in Sylhet. Of those only If x of the 150 individuals were from sythet and z of the individuals participated in the marathon but were not from sylhet. Which of the following represents the number of individuals who did not participated in the marathon and were not from sylhet?

A

150 -x+z

B

150 -x-y+z

C

150-x+z

D

150-x-z

Of the 65 families in a locality, 45 have children and 10 have retired individuals as members. Of the families, 8 have both children and retired individuals as members. How many of the families have neither children nor retired individuals as members?

A

2

B

18

C

20

Of the 45 families in a locality, 25 families have working mothers and 10 families have retired individuals as members to look after the children at home. Of the families, 8 have both working mothers and retired individuals as members. How many of the families have working mothers but no retired individuals as members?

A

2

B

18

C

17

In a market suvey 20% respondents opted for product A whereas 60% opted for product B. the remaining individuals were not certain. If the difference in number between those who opted for product B and those who were uncertain was 720 . How many individuals were covered in the survey?

A

1440

B

1800

C

3600

D

None

You have configured a Group Policy Object (GPO) for the marketing oranization unit (OU) to prevent users from accessing My Network Places and from running System in Control Panel. You want the Managers Domain Local Group to be able to access My Network Places, but you still want to prevent them from running System in Control Panel. What should you do?

A

Add the Managers group to the access control list of the GPO. Disable the permission of the managers group to read and apply the Group Policy

B

Add the Managers group to the access control list of the GPO. Deny the permission of the managers group to read and apply the Group Policy

C

Create a second GPO in the OU. Add the Managers group to the access control list. Allow the managers group to apply the Group Policy. Deny the Authenticated Users group permission to read and apply th

D

Create a second GPO in the OU. Add the Managers group to the access control list. Allow the managers group to apply the Group Policy. Disable the Authenticated Users group permission to read and apply

E

None of above

Choose the form correct answer to fill in the blank in 'Unless protector areas are established and ensure, the Bengal Tiger face _______ of extinction'

A

possible

B

the possibility

C

to be possible

D

possibly

A drug that is highly effective in treating many types of infection can,at present,be obtained only from the bark of the ibora , a tree that is quite rare in the wild. It takes the bark of 5000 trees to make one kilogram of the drug. It follows, therefore, that continued production of the drug must inevitably lead to the ibore's extinction. Which of the following,if true, most seriously weakens the arguments above ?

A

The drug made from the ibora bark is dispensed to doctors from a central authority

B

The drug made from the ibora bark is expensive to produce

C

The leaves of the ibora are used in a number of medical products

D

The ibora can be propagated from cuttings and grown under cultivation

Which of the following medium is employed for extinction of arc in air circuit breaker ?

A

Water

B

Oil

C

Air

D

SF₆

Which of the following is mainly responsible for the extinction of wild life

A

Pollution of air and water

B

Hunting of flesh

C

Destruction of Habitats

D

All of these

The antonym of 'extinction ' is

A

destruction

B

survival

C

stagnation

D

elaboration

Which of the following is necessary to maintain the number of individuals of species and to prevent their extinction?

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