The ratio in which two sugar solutions of the concentration 25% and 45% are to be mixed to get a solution of concentration 30% is
1992 05ebb6f97c1aae5429b38e65bThe greatest number that divides 411, 684, 821 and leaves 3, 4 and 5 as remainders, respectively, is
1989 05f0823d3bc929f40b0baf96bThe area of an equilateral triangle inscribed in a circle is $$ 9√3 cm^2$$ . The area of the circle is:
1988 05ecc97667bb74b48ff92cb5e