Quantitative Aptitude - Arithmetic Ability Questions

If x = 313- 3-13, then 3x2 + 9xis equal to

If x3-2x=3x, then the value of x2+1x2 will be

Δ DEF is right angled at E. If m∠D = 45%., then Cosec F =

If the selling price of an item is Rs 9750 after getting a discount of 25%, then what was its marked price (in Rs)?

The ratio of the number of marbles that Joyee and Minati had was 5 : 8 while the ratio of the number of marbles that Jacob and Minati had was 7 : 12. What is the ratio of the number of marbles that Joyee and Jacob had?

Two trains, one 150 m long and the other 130m long, coming from opposite directions crosssed each other in 7.2 seconds. The sum of speed of the two trains every hour would then be

Determine the value of 'x' when 3x3 = 27

There is 40% increase in an amount in 10 years at simple interest. What will be the compound interest of Rs. 30000 after 3 years at the same rate?