Answer:
r= 10
Step-by-step explanation:
30 - 20 = 10
54, 36, 24 are the 1st 3 element of a geometric progression with 2/3 as a common ratio: PROOF:
the 1st term is 54, (a₁= 54) the 2nd term a₂ = 24, then
(a₂ = a₁.r) or 36 = 54.r → r= 36/54 = 2/3. Same logique for the 3rd term.
So 2/3 is common ratio. We know that :U(n) = a.(r)ⁿ⁻¹. Then if a =54 and r = x (given by the problem), then f(x) = 54.xⁿ⁻¹
n, being the rank of any element of this geometric progression
Answer:
= 7/13
Step-by-step explanation:
Total number of balls in the bag is
4+6+3 =13
13 - 6 will be used to calculate how many of the balls are not white and only 7 are NOT white therefore, the probability will be
7/13 7 non white balls/13 balls in total
