1.Show that 53-55 is an virational number 2.If A = {x/ # EN, & is a prime number less than 10}
B = { seld ENg Yyactors of 12}
Then vereby NCA-B) +nCB-A) = nCAUB) - MADB)
3.Find the ratio in which the point (-3,K) divides
the line segment joining the points 65,-4) and
(-23) and also find k.
4.Find the sum of all integers between 40 and 250
which are multiples of 7.
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