NCERT 2022 | सांतत्य तथा अवकलनीयता - L1 | Class 12 गणित | Hindi Medium | Akshay Sir | 5 PM |

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If A =12.0 cm pm 0.1 cm and B 8.5 cm pm 0.5 cm, find A + B

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The probability that a student selected at random from a class will pass in Hindi is 4/5 and the probability that he passes in Hindi and English is 1/2 . What is the probability that he will pass in English if it is known that he has passed in Hindi ?

In a class there were 28 boys and some girls. In a test the mean score obtained by the boys was 12.5 while that obtained by the girls was 14.5. If the overall average was 13.1. what was the total number of students in the class?