Notice that 25+23+17+14+12+9=100, so among these students there are no 2 studying 2 subjects.
The probabilities of selecting students studying a certain subject are as follows
P(physics)=25/100
P(chemistry)=17/100
P(maths)=9/100
P(sociology)=23/100
P(political sciences)=14/100
P(anthropology)=12/100
since all the sets are disjoint, that is there are no common elements, and since all the students in consideration are enrolled in one these 6 subjects:
P(physics)+P(chemistry)+P(maths)+P(sociology)+P(political sciences)
+P(anthropology)=1
P(a)=P(sociology)+P(political sciences)+P(anthropology)+P(physics)
thus
P(a')=1-P(a)=P(chemistry)+P(maths)=17/100+9/100=26/100=0.26
Answer: 0.26
Answer:
Around 175.80
Step-by-step explanation:
732/178 + 167 - 642/137 =
366/89 + 167 - 642/137
4 10/89 +167 - 642/137
8.80 +167
175.80
Answer:
Therefore he paid $10440 in 4 year.
Step-by-step explanation:
Given, Rachit borrowed $15000 from his friend. He gave $3000 at the rate 15% for 4 year.
Interest(I₁)= Prt here P= $3000, r=15% and t = 4 year
=$(3000×0.15×4)
=$1800
He gave $(15000-3000)= $12000 at the rate of 18%.
Interest(I₂)= Prt here P= $12000, r=18% and t = 4 year
=$(12000×0.18×4)
=$8640
Therefore he paid =$(1800+8640)=$10440 in 4 year.
