Quantitative Aptitude - Arithmetic Ability Questions

The LCM of two numbers is 66. The numbers are in the ratio 2:3. The sum of the numbers is

The discount offered on a Shirt of Rs 500 and a pair of Trousers of Rs 1000 is 20% and 40% respectively. If Ajay bought 2 Shirt and 3 pair of Trousers then what was the effective discount ( in %) he recieved?

In the following question, select the odd word pair from the given alternatives.

If (1/x) + (1/y) + (1/z) = 0 and x + y + z = 9, then what is the value of x3 + y3 + z3 – 3xyz?

The average marks obtained by a group of 16 students was 20. One student left the group as a result of which the average of the remaining students rose to 21. But another student joined, as a result of which the average marks of the group dropped a bit and became 20.5. What was the average marks obtained by the student who left and the one who joined?

Circum center of ΔABC is O. If ∡BAC = 75 and ∡BCA = 80 degrees,

then what is the value of ∡OAC(in deg)?

If Sec θ = 5/3, then what is the value of Cosec θ?

What is the area (in sq cm) of a rectangle if its diagonal is 25 cm and one of its sides is 24 cm?