The probability of a man hitting a target is 1/5. If the man fires 7 times, then what is the probability that he hits the target at least twice?
1 − (³C₀)(⅘)⁷ − (⁷C₁)(⅕)(⅘)⁶
1 − (⁷C₁)(⅘)⁷
1 − (¹¹C₆)(⅘)⁶
1 − (¹¹C₇)(⅘)⁷
For election to the Lok Sabha, a nomination paper can be filed by
Miscellaneous · Easy
In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a
Miscellaneous · Easy
Which among the following events happened earliest ?
Miscellaneous · Easy
An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
Miscellaneous · Easy