Page 122 - Ganit Kaushal

2. Based on the Infographics Picture given in section 4.6, answer the following questions:

(a) Name the highest mountain peak on Earth.
(b) Name the lowest mountain peak.
(c) State whether true or false:
(i) The Mountain peak Aconcagua is 1320 m higher than Mount Elbrus.
(ii) Mount Denali is in South America.
(d) Fill in the blanks:

(i) The height of Vinson Massif Mountain Peak is __________ .
(ii) Mount Kilimanjaro is __________ m higher than mount Koscuiszko.
3. The alongside given table names a few sports and the number of students playing that sport in a
University.
Which of the following methods do you think Sports Cricket Football Basketball
will be the most convenient to represent the Number of Students 1387 1025 980
data in the given table, and why?

(a) Tally Marks (b) Pictorial (c) Bar Graph
Miscellaneous Solved Examples

There are four options (Q. 1 to Q. 5), out of which only one is correct. Choose the correct option.

Ex 1. Using tally marks, which one of the following represents the number eight?
(a) |||| ||| (b) ||| ||| (c) || (d) |||
Sol. In tally marks, | Æ 1, || Æ 2, ||| Æ 3, |||| Æ 4 and Æ 5.
8 can be represented in tally marks = 5 + 3 = |||

So, option (d) is correct.
Ex 2. The marks (out of 10) obtained by 28 students in a Mathematics test are listed as:
8, 1, 2, 6, 5, 5, 5, 0, 1, 9, 7, 8, 0, 5, 8, 3, 0, 8, 10, 10, 3, 4, 8, 7, 8, 9, 2, 0
The number of students who obtained marks more than or equal to 5 is
(a) 13 (b) 15 (c) 16 (d) 17

Sol. The number of students who have obtained marks more than or equal to 5 = 4 + 1 + 2 + 6 + 2 + 2 = 17.
So, option (d) is correct.
Ex 3. In example 2 above, the number of students who scored marks less than 4 is
(a) 18 (b) 13 (c) 12 (d) 10
Sol. The number of students who scored marks less than 4 = 4 + 2 + 2 + 2 = 10.

So, option (d) is correct.
Ex 4. The choices of fruits of 42 students in a class are as follows:
A, O, B, M, A, G, B, G, A, G, B, M, A, G, M, A, B, G, M, B, A, O, M, O, G, B, O, M, G, A, A, B, M,
O, M, G, B, A, M, O, M, O,
where A, B, G, M and O stand for the fruits Apple, Banana, Grapes, Mango and Orange respectively.
Which two fruits are liked by an equal number of students?

(a) A and M (b) M and B (c) B and O (d) B and G

120 Mathematics-6