The cost of a note book is twice the cost of a pen. If the cost of a note book is
x and that of a pen is ₹ y, then a linear equation in two variables to represent the given condition is ______.
A x + 2y = 0
B x – 2y = 0
C 2x + y = 0
D 2x – y = 0
2y = x therefore 2y - x and x - 2y both are = 0
Fill in the blanks.
In 'Less Than' Ogive, the cumulative frequencies are written corresponding to the __P__ limits of the classes of the given data.
In 'More Than' Ogive, the cumulative frequencies are written corresponding to the __Q__ limit of the classes.
On an ogive, point P whose y - coordinate = n/2 (i.e., half of the total number of the entries), has its x - coordinate equal to the __R__ of the data. Two ogives, one 'less than' type and the other 'more than' type for the same data when drawn simultaneously on the same graph, intersect each other at the point P whose __S__ = n/2 and __T__ = median of the data where n is the total number of the entries of the data.
AUpper - Lower - Mediany - coordinatex - coordinate
BLower - Upper - Mediany - coordinatex - coordinate
CUpper - Lower - Median x - coordinatey - coordinate
DUpper - Lower - Upper limity - coordinatex - coordinate
what is Ogive
Which of the following statements is INCORRECT?
AZero has a reciprocal.
BThe product of two negative rational numbers is always positive.
CThe reciprocal of a positive rational number is positive.
DThe product of two positive rational numbers is always positive.
The figure below is made up of one big circle, two identical medium circles and two identical small circles. The ratio of the radius of the small circle to the radius of the medium circle is 2 : 3.
(A) What is the total area of the unshaded part in the figure?
(B) What fraction of the big circle is shaded?
A144 π cm2--------5/18
B104 π cm2--------5/18
C104 π cm2--------13/18
D144 π cm2--------13/18