Question

2.How many 4-digit even numbers can be formed using the digits 0,1,2,3,4 if repetition is not permitted ? 

36

24

60

80

4. Find the number of different signals that can be generated by arranging atleast 2 flags in order (one below the other) ,if 5 different flags are available. 

60

120

240

320

answer only u know orelse it will be reported
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Answer 1

Answer:

hmmmm itna hard hai yaaar