Mathematics Tes...

If a,b,c are vectors such that [abc]=4 , then =[a*b b*c c*a]=

If the n^th roots of unity are z₁ and z₂ then arg ((z₁)/z₂) is a multiple of:

Find the multiplication of the two complex numbers (4 + 2i) and (1 + 8i).

The value of (sin245^°−sin215^°)

Find the value of 50 terms of the given sequence:
$\frac{1}{2}+\frac{3}{4}+\frac{7}{8}+\frac{15}{16}+......$50 terms.

Find how many four letter word can be formed out of the word “PINEAPPLES”?

Find the mode for the following distribution:

If f: R → R is given by f(x) = 2x + 5, then the function is said to be