Tag: math & puzzles

Questions Related to math & puzzles

A fish wants to swim 25 km upstream. he swims 7 km in the day and floats back 5 km at night. how many days will it take for the fish to reach 25 km upstream?

  1. 10 days

  2. 12.5 days

  3. 9 days

  4. 7 days


Correct Option: A

A box contains 20 bulbs, out of which 4 are defective. If we randomly choose 2 bulbs from this box, wht will be the probability that atleast 1 bulb is defective.

  1. 4/19

  2. 7/19

  3. 12/19

  4. 21/95


Correct Option: B

1 card is randomly taken from a pack of 52 cards. What is the probability that the card is either a ten or spade?

  1. 4/13

  2. 1/4

  3. 1/13

  4. 1/26


Correct Option: A