CBSE - Aptitude Mathematics

In the following data Variable: 20 19 18 17 16 15 14 13 12 11 Frequency: 1 2 4 8 11 10 7 4 2 1 The mean variable is 1.16:44 2.16:54 3.15:44 4.15:54

If oranges are bought at the rate of 6 for a rupee, how many must be sold for a rupee in order to gain 20%? 1. 7 2. 5 3. 4 4. None of the above

If Rs. 320 will maintain a family, of 12 persons for 80 days, how long will Rs. 420 maintain family of 35 men? (1) 36 days (2) 40 days (3) 37days (4) NONE OF THESE

Deven borrowed a certain amount at 6% p.a. simple interest for 9 years. After 9 years, he returned Rs. 8,470 (including principal and interest). What amount did he borrow? . (1) Rs. 7,707.70 (2) Rs. 8,416 . (3) Rs. 5,500 (4) Rs. 3,896

The least number which must be subtracted from 6155 to make it a perfect square is 1. 78 2. 71 3. 7 4. None of the above