Direction: what should come in place at question mark(?).

$$ {4\over 7}×{2{4\over 5}÷{2\over 5}=?}$$

X, Y and Z take 18 days to complete a piece of work. If X works alone he finishes the work in 36 days and if Y works alone he finishes it in 60 days. How long will it take Z to complete the work alone?

The following pie chart gives the measures of the central angles of the sectors that reflect the number of beds in each of 7 different hospitals with respect to the total number of beds in these 7 hospitals taken together.
 
 

If the number of beds in H7 are 39, then what is the total number of beds in all the 7 hospitals taken together?

Indian Council for Cultural Relations (ICCR) will set up 'Bangabandhu Chair' at Delhi University to promote diplomatic relations between India and which country?

Which of the following words will be at third place in Dictionary ?

WMA arrangement enables centre and the states to borrow money up to how many days from the RBI to tide over their liquidity mismatch?