Q1. Attempt any five sub – questions: [5]
i. Find t_{n} of the given A.P. : 3, 8, 13, 18, ……… [Ans]
ii. Write the given quadratic
equation in the standard form. n + ^{7} / _{n} = 4. [Ans]
iv. A coin is tossed. Find sample
space 'S' and n(S). [Ans]
v. Find the next two terms of the
given sequence 2, 4, 8, 16, ……… [Ans]
vi. Write the class mark of the class
60 – 69. [Ans]
Q2. Attempt any four sub – questions: [8]
i. Write the values of a, b and c from the given quadratic equation and hence
find the value of the discriminant. 3x^{2} + 2x – 1 = 0. [Ans]
ii. Find the first four terms of an
A.P. , if a = 0 and d =  3 . [Ans]
iii. A box contains 20 cards marked
with numbers from 1 to 20. One card is taken out of the box at random. What is
the probability that the number on the card is a prime number? [Ans]
iv. Form a quadratic equation whose
roots are 5 and – 7. [Ans]
v. Examine whether the point ( 2 , 5
) lies on the graph of the equation 3x –
y = 1. [Ans]
vi. For a certain frequency
distribution, the value of the Mean is 101 and that of the Median is 100. Find
the value of the Mode. [Ans]
Q3. Solve any three sub – questions: [9]
ii. The first and the last terms of
an A.P. are 13 and 216 respectively. The common difference is 7. How many terms
are there in that A.P.? Also, find the sum of all the terms in it. [Ans]
iii. In the given experiment, write
sample space S and the events P and Q. Write also n(S), n(P) and n(Q). Three
coins are tossed simultaneously. P is the event of getting at least two heads
and Q is the event of getting no head. [Ans]
iv. Below is given the distribution
of money in (Rs.) collected by students for a flood relief fund. [Ans]
Money (in Rs.)

0 – 10

10 – 20

20 – 30

30 – 40

40 – 50

No. of students

5

7

5

2

6

Find the Mean of money collected by a
student by using 'Direct Method'.
v. The number of hours spent by a
school boy in different activities in a day is given below: [Ans]
Activity

Sleep

School

Play

Homework

Others

Total

No. of hours

8

7

2

4

3

24

Represent the above information using
a pie diagram.
Q4. Attempt any two sub questions. [8 ]
ii. The sum of two number is 60. The greater number is 8 more than
thrice the smaller number. Find the numbers. [Ans]
iii. A die is thrown. Find the
probability of the following events. (a)
getting a number less than 3. (b) getting a number divisible by 2. (c) getting a prime number. [Ans.]
Q5. Attempt any two sub – questions. [10]
i. The sum of the first n terms of an
A.P. is 3n + n^{2}. [Ans]
(a) Find the first term and the sum
of the first two terms. (b) Find the second, third and the 15^{th}
terms.
ii. A boat takes 10 hours to travel
30 km upstream and 44 km downstream and it takes 13 hours to travel 40 km upstream and 55 km downstream.
Determine the speed of the stream and that of the boat in still water. [Ans]
iii. The sales of a salesman in a
week are given below in a pie diagram. Study the diagram and answer the following questions.
If the total sales due to salesman 'A' is Rs. 18,000, then . [Ans]
(a) find the sales of each salesman.
(b) find the salesman with the highest sales.
(a) find the sales of each salesman.
(b) find the salesman with the highest sales.
(c) find the difference between the
highest sale and the lowest sale. (d) find the total sales.