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Cards marked with numbers 3, 4, 5, ........

Cards marked with numbers 3, 4, 5, ......, 50 are placed in a box and mixed thoroughly. One card is drawn at random from the box. Find the probability that number on the drawn card is

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The correct Answer is:
Total cards = 50 – 3 + 1 = 48
No. divisible by 7 are `7, 14, 21, 28, 35, 42, 49`
Required probability `=(7)/(48)`
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CBSE COMPLEMENTARY MATERIAL-PROBABILITY-LONG ANSWER TYPE QUESTIONS
  1. Cards marked with numbers 3, 4, 5, ......, 50 are placed in a box and ...

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  2. Cards marked with numbers 3, 4, 5, .........,50 are placed in a box an...

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  3. A bag contains 5 white balls, 7 red balls, 4 black balls and 2 blue ba...

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  4. A bag contains 5 white balls, 7 red balls, 4 black balls and 2 blue ba...

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  5. A bag contains 5 white balls, 7 red balls, 4 black balls and 2 blue ba...

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  6. A bag contains 5 white balls, 7 red balls, 4 black balls and 2 blue ba...

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  7. The king, queen and jack of diamonds are removed from a pack of 52 pla...

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  8. The king, queen and jack of diamonds are removed from a pack of 52 pla...

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  9. The probability of a defective egg in a lot of 400 eggs is 0.035. Calc...

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  10. In a fair at a game stall, slips marked with numbers 3,3,5,7,7,7,9,9,9...

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  11. A box contains 90 discs which are numbered from 1 to 90. If one dis...

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  12. A box contains 90 discs which are number from 1 to 90 . If one disc i...

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  13. A box contains 90 discs which are numbered from 1 to 90. If one disc i...

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  14. A card is drawn at randown from a well shuffled deck of playing cards....

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  15. A card is drawn at randown from a well shuffled deck of playing cards....

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  16. A card is drawn at random from a well shuffled deck of playing cards. ...

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  17. A card is drawn at randown from a well shuffled deck of playing cards....

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  18. A card is drawn from a well shuffled deck of playing cards. Find the p...

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  19. A card is drawn from a well shuffled deck of playing cards. Find the p...

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  20. A card is drawn from a well shuffled deck of playing cards. Find the p...

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