Linear Equations in One Variable — Maths STD 7 — Question

Find the missing value of p for the following distribution whose mean is 12.58

x:	5	8	10	12	p	20	25
f:	2	5	8	22	7	4	2

Complete the following multiplication table:

Second number
First number	x	-4	-3	-2	-1	0	1	2	3	4
	-4
	-3
	-2
	-1
	0
	1
	2
	3
	4

ls the multiplication table symmetrical about the diagonal joining the upper left corner to the lower right corner?

Number of children in six different classes are given below. Represent the data on a bar graph.

Class	V	VI	VII	VIII	IX	X
Number of children	135	120	95	100	90	80

1. Which class has the maximum number of children?
2. Which class has the minimum number of children?

How do you choose the scale?

Draw a line AB and take a point P outside it. Draw a line CD parallel to AB and passing through the point P.

A rectangular hall is 12 m long and 6 m broad. Its flooring is to be made of square tiles of side 30 cm. How many tiles will fit in the entire hall? How many would be required if tiles of side 15 cm were used ?

In each of the following examples, write all the factors of the numbers and find the greatest common divisor.
i. 28, 42
ii. 51, 27
iii. 25, 15, 35

Draw triangle with the measures given. In ∆MAT, l(MA) = 5.2 cm, m∠A = 80°, l(AT) = 6 cm.

In a certain colony, there are 50 families. The number of people in every family is given below. Draw up the frequency table.
5, 4, 5, 4, 5, 3, 3, 3, 4, 3, 4, 2, 3, 4, 2, 2, 2, 2, 4, 5, 1, 3, 2, 4, 5, 3, 3, 2, 4, 4, 2, 3, 4, 3, 4, 2, 3, 4, 5, 3, 2, 3, 2, 3, 4, 5, 3, 2, 3, 2

A dice was cast 40 times and each score noted is given below. Draw up a frequency table for this data.
3, 2, 5, 6, 4, 2, 3, 1, 6, 6, 2, 3, 5, 3, 5, 3, 4, 2, 4, 5, 4, 2, 6, 3, 3, 2, 4, 3, 3, 4, 1, 4, 3, 3, 2, 2, 5, 3, 3, 4.

The following table shows the imports (in thousand crore rupees) made by India over the last five years. Draw a bar graph to represent this data.

Year	2001-02	2002-03	2003-04	2004-05	2005-06
Imports (in thousand crore rupees)	148	176	204	232	180