Help Statistics/Probability question

[Silent_eyes]

Plz any slove the Statistics/Probability question
advance thanx


the number of fire alalrms pulled each hour fluctuates in Islamabad probability table of differrent alarms per hour is shown
No of alarms pulled probability
Less than 8
Probability = 0.12
8
Probability 0.24
9
Probability 0.28
10
Probability 0.26
More than 10
Probability 0.10.
what is the probability
a.more than 8 alarms will be pulled
b.between 8 and 9 alarms (both inclusive) will be pulled.

[hafsaprinces]

Mujy stats ki notes chaheye 1 year sindh bord help

[MisterDanish]

answer of a part is 0.64
and answer of part b is 0.52