Quantitative Aptitude - Arithmetic Ability Questions

Select the odd word/letters/number/number pair from the given alternatives.

Select the odd word from the given alternatives.

If cos4θ-sin4θ=13 then the value of tan2θ is

The average salary of all workers in a workshop is Rs.12000. The average salary of 7 technicians is Rs.15000 and the average salary of the rest is Rs.9000. The total number of workers in the workshop is

Ages of Lalu and Balu are in the ratio of 1 : 2. After 7 years their ages ratio changes to 3 : 5. The elder person age is

If the perimeter of a semi-circle is 36 cm, then find its radius (in cm).

If Cot θ = 24/7, then Sin θ = ?

ΔDEF is right angled at E. If cosD = 8/17, then what is the value of secF ?