In-an-examination-the-probability-of-charles-scoring-the-highest-mark-in-Maths-Physics-and-Chemistry-are-0-90-0-75-and-0-80-respectively-Calculate-the-probability-that-he-will-get-the-highest-mark

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Question Number 168035 by pete last updated on 01/Apr/22

$$\mathrm{In}\mathrm{an}\mathrm{examination},\mathrm{the}\mathrm{probability}\mathrm{of}\mathrm{charles}$$$$\mathrm{scoring}\mathrm{the}\mathrm{highest}\mathrm{mark}\mathrm{in}\mathrm{Maths},\mathrm{Physics}$$$$\mathrm{and}\mathrm{Chemistry}\mathrm{are}0.90,0.75\mathrm{and}0.80\mathrm{respectively}.$$$$\mathrm{Calculate}\mathrm{the}\mathrm{probability}\mathrm{that}\mathrm{he}\mathrm{will}\mathrm{get}$$$$\mathrm{the}\mathrm{highest}\mathrm{mark}\mathrm{in}\mathrm{at}\mathrm{least}3\mathrm{subjects}.$$

Commented by MJS_new last updated on 01/Apr/22

$$“\mathrm{at}\mathrm{least}3{\mathrm{subjects}}^{″}\mathrm{with}3\mathrm{subjects}\mathrm{given}$$$$\mathrm{means}“\mathrm{in}\mathrm{all}3{\mathrm{subjects}}^{″}\Rightarrow$$$$.9\times .75\times .8=.54$$

Commented by pete last updated on 02/Apr/22

$$\mathrm{Thanks}\mathrm{Sir}$$

Commented by pete last updated on 05/Apr/22

$$\mathrm{thanks}\mathrm{very}\mathrm{much}$$

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