[" EXERCISE "1.1],[" 1.Use Euclid's division algorithm to find the HCF of: "],[[" (i) "135" and "225," (ii) "196" and "38220],[" 2.Show that any positive odd integer is of the form "6q+1," or "6q+3," or "6q+5," where "bar(y)" ,where "bar(y)" is "],[" some integer."],[" 3.An army contingent of "616" members is to march behind an army band of "32" members in "],[" a parade.The two groups are to march in the same number of columns.What is the "],[" maximum number of columns in which they can march? "]]