i. Find the next three terms of sequence: 3, 9, 27,
81, ...
ii. Check whether x = 1 is the solution of the quadratic equation x2
– 4x + 3 = 0.
iii. Solve 2x +
3y = 5; x – 6y = - 20.
iv. Transform it using sign of variation: The wave
length of sound (λ) and its frequency (μ)
are in inverse proportion.
v. Solve p2 + 8p + 4 = 0.
vi. Find the 10th term of the A.P. 80, 76,
72, 68, ..........
Q2. Attempt any four sub – questions:
[8]
i. Determine whether the given sequence is an A.P. or
not : 1, 2, 4, 8, .....
ii. Solve the following quadratic equation m2
– 6 m + 4 = 0 by completing square method.
iii. Solve 23x + 17 y = 103; 17x + 23 y = 97.
iv. The number of paper sheet is directly proportional
to its weight. If the weight of 12 sheets of paper is 40 gm how many sheets of
the same paper would 2500 gm weight?
v. Sum of two numbers is 20 and their difference is 4.
Find the numbers.
Q3. Solve any three sub – questions: [9]
i. Solve the following simultaneous equation by the
method of substitution: x + y = 0; x – y = 2
ii. The product of two consecutive natural number is
42. Find the numbers.
iii. Find the first three terms of tn = n3 – 3
iv. Find the sum of all natural numbers from 1 to 200
which are divisible by 4.
Q4. Attempt any two sub –
questions: [8]
i. A man borrows Rs. 4000 and agrees to repay with a
total interest of Rs. 680 in 12 monthly instalments, each instalment being less
than the preceding one by Rs. 20. Find the amount of the first and the last
instalment.
ii. Solve the quadratic equation by using formula
method. 3x2 + 2x + 1 = 0
iii. Sum of two natural numbers is 70. One of the
number is greater by 10 than twice the other. Find the numbers.
Q5. Attempt any two sub – questions.
[10]
i. Number of taps and time required to fill up a tank
are in inverse proportion. 6 taps are required to fill a tank in 1 hour 10
minutes. How long will it take if only 5 taps of the same type are used?
ii. The
length of a piece of cloth varies directly as its cost. The cost of the cloth
having length 24 m is Rs. 840. Find the length of a cloth having cost Rs. 525.
iii.
Split 10 into two parts such that the sum of their squares is 52.