1.
Which of the following is a perfect square?
2.
In how many years will a certain sum becomes seven times of itself at 15% per year simple interest ?
3.
The expanded form of (x + y ) (x – y) is a :——
4.
If 64 > x³, then the greatest possible integer value of x is :
5.
ab x ba,= 72 and a or b ≠ 1. Find the possible positive values of a + b.
6.
For what value of K is 16x² + 24xy + K a perfect square?
7.
Which of the following sets is not closed under subtraction?
8.
If two numbers are equal, then:
9.
What is the smallest positive irrational number?
10.
Period of the decimal 2.3636363……. is :
11.
A shopkeeper bought 10 kg. of rice for Rs 210, 5 kg. of rice at Rs 16 per kg and 0.5kg. for Rs 20. Find the average cost of the rice per kg.
12.
If it is given that xyz = 0, Find: (ax)yz + (ay)xz + (az)xy
13.
Find the H.C.F of (18p²qr³), (24pq²r) and (27 p³qr²).
14.
a6 < 1000, Find the greatest possible values of the whole number 'a'.
15.
What is the quotient when (x³ − 8) is divided by (x² + 2x +4)?
16.
Which of the following pairs of integers have 5 as a difference ?
18.
The L.C.M. of two numbers is 525 and the product of two numbers is 2625. Find the H.C.F.
19.
A 240 m long train running at 72 km/h crosses another train coming from opposite direction at a speed of 90 km/h in 12 seconds. Find the length of the other train.
20.
(2x − 6y)² – (6y + 8x)²= ?
