Question

Write a additive inverse of -12
A bag contains some blue and some black balls if the probability of drawing a red ball at random is 3/4 then find the probability of drawing a blue ball

Answer 1

Additive inverse of -12 = 12

I think 3/4 should be probability of drawing a black ball...

Probability of drawing a black ball = 3/4

Probability of drawing a blue ball = Probability of sure event - 3/4

= 1 - 3/4

= 1/4