Explanation

The reciprocal of frequency is its time period.

Explanation

If A = {1,2,3,4,6} B= {2,4,5,7} then B-A =?

{2,4,5,7} -  {1,2,3,4,6}

 B - A means B contains the element which is not present in A. 

{3,5,7}

Explanation

A soldier serves in the Army and a Sailor serves in the Navy.

Reason – a soldier is a person who is engaged in military service  in the army,

similarly, a sailor  is a person serving in the navy

Explanation

 Acre is to kanel as

the square is to marls

Explanation

Alt + E is a shortcut created on the Keyboard

and is used to turn up the Edit file menu if the programs or applications support the file menu.

Explanation

Unlike poles of different magnets attract each other; like poles repel each other.

 property of a magnet:

Like poles of the magnets i.e. north-north and south-south repel each other 

unlike poles of the magnets i.e. north-south and south-north attract each other.

Explanation

25 percent *60

= (25/100)*60

= (25*60)/100

= 1500/100

= 15

Explanation

Shift + Delete is used to delete the selected item permanently without placing the item in the Recycle Bin.

Explanation

An n-type semiconductor results from implanting dopant atoms that have more electrons in their outer (bonding) shell than silicon. 

Explanation

In the given sentence the focus needs to be on the verb ‘trust’.

The preposition ‘in’ is commonly used to speak about a state, condition or abstract concept.