Question
If rxy = 0.4, then r(2x, 2y) is equal
to:Solution
r is not affected by change of scale.
What is the mode of the given data?
5, 7, 9, 7, 3, 7, 5, 7, 8, 6, 7
The area of a square is 900 cm2 which is 120 cm2 less than that of a rectangle. Find the perimeter of the rectangle if the length ...
A shopkeeper bought two article A&B for a total of rupees 3500. He marked Article A 140% above its cost price and sold it after giving a discount of 20%...
In triangle ABC, G is the centroid. If CF, AD and 'BE' are medians on sides 'AB', 'BC' and 'CA' respectively, and area of triangle BGF is 24 cm2
If P represents the largest single-digit prime number, determine the fourth proportional to the numbers (P + 3), (P - 2), and (P + 5).
Boat ‘A’ can cover 320 km in still water in 16 hours. In still water, if the ratio of the speed of boat ‘A’ to that of ‘B’ is 5:3 and the sp...
The mode and the mean of grouped data are 25 and 29.5 respectively. Find the median, correct to two places of decimal, using empirical relation.
What is the mean of the following numbers:
45, 50, 55, 60, 65
Calculate the mean of these numbers:
18, 14, 22, 16, 20, 12
A total of Rs. 558 was distributed among P, Q, R, S, T, and U. The amounts they received were in descending order and formed an arithmetic progression. ...
