Question

1. Multiple Choice Questions (MCO)
1x10=10
1) What is the identity element for the addition of rational numbers?
a) 0
b) 1
c) - 1
d)
Which of the following property does this arrangement of number shows?
2 x ( x ) = ( x ) × 1 1 1
a) Distributive
b) commutative c) closure
d) Associative
If
- 4 = then x is
a)
11
b)
c) - 30
d) 30
Which of the following properties describes a trapezium?
a) A pair of opposite sides are parallel
b) The diagonals are equal
C) The diagonals bisects each other
d) The diagonals are perpendicular to each other
v)
The sum of the interior angles of a polygon is 540° Find its number of sides
a) 4
b) 7
d) 3
vi)
What is the probability of choosing a consonant the word ENGLISH word?
30
11
iv)
C) 5
d)
vii)
If the adjacent sides of a rectangle and diagonals are equal then what is the name of
the polygon?
a) Parallelogram b) square
c) Rhombus d) Trapezium
A man bought a box for Rs 250. for how much should he sell it so as to gain 10%?
viii)
c) 62
b) 18
19
a) Rs. 285
b) Rs 275
C) ?Rs 257
d) Rs. 209
ix) If x -+ = 8. then what will be x + 5?
a) 66
b) 64
d) 68
The number of 3 cm cubes that can be formed from a metallic cuboid measuring 10
cm x 9 cm x 6 cm is
a) 10
d) 20
2. Very short answer questions
1x10=10
Find the HCF of 16x?y? and -8ry?
ii) If the cost of 12 books is Rs. 450. then find the cost of 16 books.
Value of (7-5) 210 =
If 3' = then what is the value of x?
Two cubes have volume in the ratio 8 27. Find ratio of the area of the face of one to
that of the other.
vi) Find the co-efficient of - x in the (x - 2)(x + 3).
vii) Find the upper limit of the interval 90-95.
vin) The sum of adjacent angles of a trapezium is 180° (True/False)
ix) If + 1 = iş. then what is x?
x)
1
81
Which one is greater? or​

Answer 1

Answer:

a

Step-by-step explanation:

Answer 2

Answer:

answer 1- 0

The sum of the interior angles of a polygon is 540° Find its number of sides

This can be expressed in an equation as: a=180(s-2) where a equals the sum of interior angles and s equals the number of sides the polygon has. Therefore we find that the polygon has 5 sides.