Answer:
B
Step-by-step explanation:
Consider perfect squares on either side of 132, that is
121 < 132 < 144 , thus
<
<
, that is
11 <
< 12 → B
Answer:
4
Step-by-step explanation:
Quarter hour on chemistry
Quarter hour on class 2
Quarter hour on class 3
Quarter hour on class 4
Total time....One hour
Answer:
2/9 is the correct option.
Step-by-step explanation:
As the spinner is numbered 2, 4 and 5
The general formula for probability :
P(A) = n(A) / n(S)
n(S) is the number of whole states occur in two spins which is 3 × 3 = 9
n(A) is the event that Rico will get a product of 20.
n(A) = 2 ∵ 4 × 5 and 5 × 4 will bring the product 20.
Therefor, the probability that Rico will get a product of 20 when Rico spins the spinner twice will be:
P(A) = n(A) / n(S)
= 2/9
Therefore, 2/9 is the correct option.