Latest TCS Aptitude Question SOLUTION: Amo ng a group of 2500 peo ple, 35 perc ent invest in municipal bo nds, 18 perc ent invest in oil stocks, and 7 perc ent invest in bot h municipal bonds and oil stock s. If 1 perso

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Amo ng a group of 2500 peo ple, 35 perc ent invest in municipal bo nds, 18 perc ent invest in oil
stocks, and 7 perc ent invest in bot h municipal bonds and oil stock s. If 1 perso n is to be rando mly
selected fro m 2500 people, what is the probability t hat the perso n selected w ill be o ne who invests
in municipal bonds but not in oil stocks?

Asked In TCS Radhika Rathi (12 years ago)

Unsolved Read Solution (6)

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Read Solution (6) :

raj  (12 years ago)

Probability will be 700/2500 = 7/25

As given in question
people in (M) = 35% of 2500 = 875
People in (O) = 18% of 2500 = 450
And,
People in both (O & M) = 7% of 2500 = 175
So,
No. of people who invested in municipal bonds but not in oil stocks = 875-175
= 700
So, probability = 700/2500 = 7/25

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Sarvesh Shukla  (12 years ago)

Ans-7/25
people in (M)= 35%
people in both(M & o)= 7%
so, people only in (M)= (35-7)%= 28%
no. of persons invested only in (M)= 28% of 2500= 700
so, probability= 700/2500= 7/25

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Ashwani Kumar  (12 years ago)

person invested only in oil=875-175=700
person only invested in mb=450-175=275
total sample space=2500
probability that person selected will be mb=700/2500=7/25.

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anuj gupta  (12 years ago)

no. of people who invested in oil band only = 35% - 7%= 28%

so probability = 28/100 = 7/25.. ans.

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MIR FIROJ ALI  (12 years ago)

municipal bonds only=35-7=28%
so in 100 in municipal bonds but not in oil stocks is 28
" " 1 " " " " " " " =28/100=7/25 (Ans)....

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aditya gupta  (12 years ago)

ans=7/25

people both in oil and municpal 2500*7%=175
so in municpal=2500*35%-175=700
so probablity=favourable=700/2500(total)

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