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