assignment 4 class 10 english cg board | 10th english assignment 4 answer cg board November month

class 10 exercise 8.4 question 4 part 1and2

How many 4 letter code can be formed using the first 10 letters of the english alphabet if no letter can be repeated.

In a class, 30% students fail in English, 20% students fail in Hindi and 10% students fail in both English and Hindi. A student is chosen at random, then what is the probability he fail in English, if he has failed in Hindi?

In a class, 30% students study English, 15% study Hindi and 10% study both English and Hindi. One student is selected at random. Find the probability that (i) He studies English if it known that he Hindi (ii) He studies Hindi if it is known that he studies English

How many 4-letter code can be formed using the first 10 letters of the English alphabet, if no letter can be repeated?

100 surnames were randomly picked up from a local telephone directly and the frequency distribution of the number of letters in the English alphabets in the surnames was obtained as follows: Number of letters: 1-4 4-7 7-10 10-13 13-16 16-19 Number surnames 6 30 40 16 4 4 Determine the median number of letters in the surnames. Find the mean number of letters in the surnames. Also, find the modal size of the surnames.

Most important question class 10 chapter 4 Quadratic equation