1.
If the product of two integers is 72 and one of them is − 9, then find the other integer.
2.
ab x ba,= 72 and a or b ≠ 1. Find the possible positive values of a + b.
3.
The L.C.M. of two numbers is 525 and the product of two numbers is 2625. Find the H.C.F.
4.
Which of the following pairs of integers have 5 as a difference ?
5.
The expanded form of (x + y ) (x – y) is a :——
6.
If the sum of two integers is − 35 and one of them is 17, then find the other integer.
7.
Find the total surface area of a cube of edge 12.5 cm.
8.
If four seventh of 49% of a number is 35, find the number.
9.
What is the quotient when (x³ − 8) is divided by (x² + 2x +4)?
11.
What is the additive identity element in the set of whole numbers?
12.
Period of the decimal 2.3636363……. is :
13.
For what value of K is 16x² + 24xy + K a perfect square?
14.
If x and y are the smallest and the greatest four digit numbers formed by using 1, 5, 0 and 9, then find y – x.
15.
If 64 > x³, then the greatest possible integer value of x is :
16.
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.
18.
Find the product of the values of the expression 2x² – 2x + 2 when x= -1 and x= 1.
19.
What is the multiplicative identity element in the set of whole numbers?
20.
Which of the following is/are perfect squares?
