exam
Maths Puzzle
Numerical Ability
If x the sum of all prime factors of 38, and if y is the of all prime factors of 84, what is the value of x-y?
Answer is 9.How?
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exam Other Question
Find the slope of a line between the points (5,3) and (-2,3)
How many real zeroes are there in f(x) = (x + 3)(x – 4)(x + 6)(x^2 + 7)?
@ This is fairly straightforward. Only the last factor results in imaginary solutions
a. 3
b. 5
c. 4
d. None of the above