The correlation between intelligence test scores and grades is:

1 The total number of students in a school was 660. The ratio between boys and girls was 13:9. After some days, 30 girls joined the school and some boys left the school and new ratio between boys and girls became 6: 5. The number of boys who left the school 2 The distance between two places, A and B, is 300 km. Two riders, on scooters start simultaneously from A and B towards each other. The distance between them after 2.5 hrs is 25 km. If the speed of one scooter of one scooter is 10 km/hr more than the other 3 One year ago, the ratio between Mahesh’s and Suresh’s salaries was 3 : 5. The ratio of their individual salaries of last year and present year are 2 : 3 and 4 : 5 respectively. If their total salaries for the present year are Rs. 43000, what i 4 Three girls Banu, Dhivya and Nithya are standing in a queue. There are five girls between Banu and Dhivya and eight girls between Dhivya and Nithya. If there are three girls ahead of Nithya and 21 behind Banu, then what could be the minimum number of gi 5 A and B starts from a point in opposite directions. A travels 3 km and B also 3 km. Then A turns towards right and travels 4 km and B turns towards right and travels 4 km. What is the distance between A and B?