Answers

2015-06-28T12:00:52+05:30
28 is the number which is the multiple of 4 and divisible by 7

0
2015-06-28T12:01:21+05:30
F={28,56} n(F)=2

If we look carefully , the set contains of all elements divisible by 4 and 7 , i.e. 4*7=28 between 17 and 61,since 28 and 56 are the only such elements, the answer is {28,56}
------------------------------------------------------------------
Please mark as brainliest.
1 5 1