99% लोगो को नहीं पता| 3 Amazing facts| #shorts

The full marks for a paper is 300. The break-up of the marks into theory (X), practical (Y) and project (Z), which are the three components of evaluation is 6:5:4. In order to pass one has to score at least 40%, 50% and 50% respectively in X,Y,Z and 60% in aggregate.The marks scored by four students A,B,C and D are shown in the given Bar Graph. किसी विषय का पूर्णाक 300 है | मूल्यांकन के तीन घटकों - थ्योरी (X), प्रेक्टिकल ( Y) और प्रोजेक्ट (Z) में अंकों को 6 : 5: 4 के अनुपात में विभाजित किया जाता है | पास करने के लिए, एक छात्र को X, Y, Z में क्रमशः 40%, 50% और 50% प्राप्त करना तथा समग्र रूप से 60% प्राप्त करना अनिवार्य है | चार छात्रों A, B,C और D के द्वारा प्राप्त किये गए अंकों को दिए गए दंड आरेख में प्रस्तुत किया गया है | Who among the students could not pass? निम्न में से कौन सा छात्र पास नहीं कर सका ?

A green grocer bought some mangoes and sold 33 1/3 % of them at 22.5 % profit, 25% at a loss of 25% and remaining at a loss of 3%. His overall gain or loss is : एक सब्ज़ी विक्रेता ने कुछ आम खरीदे और उनमें से 33 1/3 % को 22.5% लाभ पर, 25% को 25% हानि पर और शेष को 3% हानि पर बेच दिया | उसका समग्र लाभ या हानि है:

A laboratory blood test is 99% effective in detecting a certain disease when it is in fact, present. However, the test also yields a false positive result for 0.5% of the healthy person tested (i.e. if a healthy person is tested, then, with probability 0.005, the test will imply he has the disease). If 0.1 percent of the population actually has the disease, what is the probability that a person has the disease given that his test result is positive?