1.
If four seventh of 49% of a number is 35, find the number.
2.
What is the remainder when (2x² + 3x +7) is divided by (x + 2)?
3.
Twelve persons can make 480 toys in eight days. How many toys can 21 persons make per day?
4.
What is the multiplicative identity element in the set of integers?
5.
Find the total surface area of a cube of edge 12.5 cm.
6.
Find the degree of q[(x³ – x²)²].
7.
√X is a perfect square. Which of the following is/are true?
8.
If two numbers are equal, then:
9.
15 men, working at 8 hours a day, can do two third of a piece of work in 16 days. In how many days can 18 men working at 10 hours a day do ¼ of the same work ?
10.
What distance will a train cover in 1.2 minute travelling at 72 km/h ?
11.
(2x − 6y)² – (6y + 8x)²= ?
12.
( a – 1 ) ( a² + a + 1 ) = ?
14.
What is the smallest positive irrational number?
15.
If r³ = 1728, then find r.
17.
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.
18.
If it is given that xyz = 0, Find: (ax)yz + (ay)xz + (az)xy
19.
If 496 x 492 = x² – 4 (x>0), then x=——–
20.
The average weight of 30 boys is 57 kg and average weight of 25 girls is 35 kg. Find the average weight of the class.
