Quantitative Aptitude - Arithmetic Ability Questions

ΔDEF is right angled at E. If secD = 25/7, then what is the value of cosecF ?

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

If 3x^2 + ax + 4 is perectly divisible by x - 5, then the value of a is :

The average of 8 consecutive integers is 23/2. What is the average of first three integers?

The 3rd and 9th term of an arithmetic progression are -8 and 10 respectively. What is the 16th term?

All sides are congruent in a _____.

The mean of a distribution is 21 and the standard deviation is 7. What is the value of the coefficient variation?

If xy+yz+zx = 1, then the value of (1+y2)(x+y)(y+z) ?