Four-digit numbers using 1, 2, 3, 4 with constraints: 2 and 3 are not to follow each other. 1 is not to be immediately followed by 3. 4 is not to be at the last place. 1 is not to appear at the first place. How many different numbers can be formed?
6
8
9
None of the above
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