Quantitative Aptitude - Arithmetic Ability Questions

ΔXYZ is right angled at Y. If cosX = 3/5, then what is the value of cosecZ ?

The sum of the ages of husband and wife at present is 60. Four years ago the ratio of their ages was 7:6. What is the age of the husband?

If sin8 θ + cos8 θ – 1 = 0, then what is the value of cos2 θ sin2 θ (If θ ≠ 0 or π/2)?

A can make a cupboard in 10 days and B can do it in 50 days. Along with C, they did the job in 6.25 days only. Then in how many days C alone can do the job?

B is thrice as efficient as A and C is 0.75 times as efficient as A. What is the ratio of number of days taken by A, B and C when they work individually?

Find the smallest 8 digit number which is exactly divisible by 121.

A sum becomes Rs 8800 in 4 years at simple interest at the yearly interest rate of 25% per annum. What is the sum (in Rs)?

If 3a – (3/a) – 3 = 0, then what is the value of a3 – (1/a3) + 2?