11 NCERT MATH MOST IMPORTANT QUESTIONS

Q1. Solution Q2. Solution Q3. Solution Q4. Solution Q5. Solution so the required probability is  Q6. From the digits 0, 1, 3, 5 and 7, number greater than 5000 but of 4 digits are formed. What is the probability that the number formed is divisible by 5, if(i) The digits are repeated (ii) The digits are not repeated Solution Q7. Solution Q8. Solution Q9. What is the number of ways of choosing 4 cards from a pack of 52playing cards? In how many of these(i) Four cards are of the same suit,(ii) Four cards belong to four different suits,(iii) Are face cards,(iv) Two are red cards and two are black cards Solution Q10. Solution Q11. Solution Q12. Solution Q13. Solution Q14. Two persons A and B appear in an interview for two vacancies available. The chance of A's selection is and that of B's selection is . What is the chance that (i) both are selected...

Q1. Solution Q2. Solution         Class interval x f xf d=|x-mean| fd 0-10 5 5 25 22 110 10-20 15 8 120 12 96 20-30 25 15 375 2 30 30-40 35 16 560 8 128 40-50 45 6 270 18 108 total   50 1350   472 Class interval x f cf d=|x-median| fd 0-10 5 5 5 20 100 10-20 15 8 13 5 40 20-30 25 15 28 0 0 30-40 35 16 44 10 160 40-50 45 6 50 20 120 total   50     420 Q3. Solution Q4. Solution Q5. Solution Q6. Solution Q7. Solution Firm B shows greater variability. Q8. Solution Q9. Solution Q10. Solution Q11. Solution Q12. Solution Take Another Test