Quantitative Aptitude - Arithmetic Ability Questions

The value of 2 Tan53°Cot37°-Cot80°Tan10° ?

A man spends a part of his monthly income and saves the rest. The ratio of his expenditure to the saving is 61 : 6. If his monthly income is Rs.8710, the amount of his monthly savings is

Which of the following will yield a reclining decimal?

The least number which when divides 37044, gives the result a perfect cube, is:

If a shopkeeper sells an item at Rs 4200 which is marked as Rs 4800, then what is the discount (in %) that he is offering?

If the numbers  93, 204, 256 are arranged in ascending order, then the right arrangement is 

Of the four numbers whose average is 91, the first is 3/10 times the sum of other three. The first number is:

A merchant marks the price of his articles 30% above the cost price. He gives some discount on it and earns a profit of 13.75%. What is the discount percentage?