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Observe the calendar showing the month of January \(2019\).
 
January \(2019\)
Su M T W Th F S
    \(1\) \(2\) \(3\) \(4\) \(5\)
\(6\) \(7\) \(8\) \(9\) \(10\) \(11\) \(12\)
\(13\) \(14\) \(15\) \(16\) \(17\) \(18\) \(19\)
\(20\) \(21\) \(22\) \(23\) \(24\) \(25\) \(26\)
\(27\) \(28\) \(29\) \(30\) \(31\)    
 
Answer the following questions.
 
(i) Sort out the prime and composite numbers from the calendar.
 
Prime numbers \(=\)
 
Composite numbers \(=\)
 
(ii) Sort out the odd and even numbers.
 
Odd numbers \(=\)
 
Even numbers \(=\)
 
(iii) Sort out the multiples of \(6\); multiples of \(4\); the common multiples of \(4\) and \(6\) and LCM of the two numbers.
 
LCM \(=\)
 
(iv) Sort out the dates which fall on Monday.
Answer variants:
7,14,21,28
1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31
6,12,18,24,30
4,8,12,16,20,24,28
12
12,24
4,6,8,9,10,12,14,15,16,18,21,22,24,25,26,27,28,30
2,3,5,7,11,13,17,19,23,29,31
2,4,6,8,10,12,14,16,18,20,22,24,26,28,30