A wholesaler had 200 dozen of mangoes. He sold some of these mangoes at 20 % profit and the rest at 10 % profit, so that he made 13 % profit on selling all the mangoes. How many mangoes in dozens) did he sell at 20 % profit? 

In each of the following questions, sentences are given with blanks to be filled in with an appropriate word (s). Four alternatives are suggested for each question. Choose the correct alternative out of the four and indicate your choice for the correct answer.

 It was quite a_____ matter but was escalated due to the media coverage.

In the nitrogen cycle, soil nitrates are converted into free nitrogen by whom?

If 18 ( 9 ) 3 and 36 ( 30 ) 5 , then what is the value of A in 19 ( A ) 18 .

‘जहाँ जाना न संभव हो’ के लिये एक शब्द निम्न में से कौन सा है?

Hybridization is

In the given figure AD ‖ BC, if ∠ABC=72°, then ∠BCD=?