ssb coaching Maths for bank exams In a group of persons, 70% of the persons are male and 30% of the persons are married. If two sevenths of males are married, what fraction of the females is single? 2/7 3/7 2/3 1/3 Answer In a group, 70% are Males. So females = 30% Now, two-seventh of males are married. Married males = 2/7 * 70% = 20% Total married persons = 30% Married females = Total married - Married males = 30% - 20% = 10% Total females = 30% Out of every 3 females, one is married and two are unmarried. The correct option is C. A sum of Rs.700 has to be used to give seven cash prizes to the students of a school for their overall academic performance. If each prize is Rs.20 less than its preceding prize, what is the least value of the prize? Rs. 30 Rs. 40 Rs. 60 Rs. 80 Answer Let the least value price be X. Then the next value is X+20, and the next value is X+40 and on and on up to 7 values. So, seven cash prizes follow arithmetic progress