A quiz on class 9 Maths with answers.

2. • There are 3 rounds in the quiz:
Round 1) MCQ Round
2) Riddles Round
3) Visual Round
In MCQ Round, all the incorrect options will disappear and
only the correct answer will be left..!
Riddles Round is just an interactive and a mind fresher
round..!
If you will solve the quiz think that you have successfully
become a mathematician.
Note: All questions are related to class IXth Syllabus
except the Riddles Round.

4. 1) Who gave the famous formula for taking out
area of a scalene triangle and what is the
formula?
a) Heron, 1/2 × b × h
b) Archimedes, 4 × side
c) Archimedes,
d) Heron,
Answer: (d)

5. 2) What kind of decimal expansion does a
rational number have?
a) Terminating
b) Non-terminating
c) Reoccurring
d) All of these
Answer: (d)

6. 3) The highest exponent in a polynomial:
a) Degree
b) Mode
c) Mean
d) None of these
Answer: (a)

7. 4) Which of the following is incorrect:
a) It is possible to extend a line segment
continuously in both directions.
b) Things which are equal to the same thing are
also equal to one another.
c) If equals are added to equals, the wholes are
unequal.
d) The whole is greater than the part.
Answer: (a)

8. 5) If a transversal intersects 2 parallel lines, then
______ angles are equal
a) Alternate interior angles
b) Corresponding angles
c) Both (a) and (b)
d) None of these
Answer: (c)

9. 6) 2 adjacent angles on a straight line add upto
180 degrees by _____ Theorem.
a) Corresponding Angles
b) Linear Pair
c) Vertically opposite
d) None of these
Answer: (b)

11. 1) A lady buys goods worth Rs. 200 from a shop
(shopkeeper selling goods with zero profit) lady
pays with a 1000 Rs note to the shopkeeper. He
gets change from the next shop & keeps 200
for himself & returns 800 to the lady. After
sometime the next shop owner returns the
1000 Rs. note saying it is fake & takes the
money back. How much loss did the
shopkeeper suffer?

12. Answer: Rs 1000
Profit or Loss= Money Received-Money Given
In this case,
Fake note is Equivalent to Rs. 0
So,
Actual Money Received= Rs.
0 (Lady)
+Rs. 1000 (Neighbour)
---------------------------------Total= Rs. 1000
---------------------------------Money Given=Rs. 200 (Goods)
Rs. 800 (Change to Lady)
Rs.1000(Neighbour)
---------------------------------------Total=Rs. 2000
---------------------------------------Profit/Loss= Money Received-Money Given
=Rs.1000-Rs.2000
=Rs. -1000
Thus a Loss of Rs. 1000

13. 2) How can you add eight 8's to get the number
1,000? (only use addition)
Answer: 888 +88 +8 +8 +8 =1,000

15. 1) Identify the mathematician:
Answer: Heron

16. 2) Identify the mathematician:
Answer: Ramanujan

17. 3) Identify the mathematician:
Answer: Euclid

18. 4) Identify the mathematician:
Answer:Pythagoras

19. 5) Identify the mathematician:
Answer:Euler

20. 6) What is the different between the two figures?
Answer: First figure is a simple circle whereas the
second figure shows concentric circles.

21. 7) In the following figure identify the corresponding
angles?
Answer: a-g, d-f, c-e, b-h

22. 8) In the following figure identify the alternate
interior angles?
Answer: b-f, c-g

23. 9) In the following figure what is the sum of pair of angles
c-f and what kind of angles are these?
Answer: 180 °, Co-Interior angles

24. 10) In the following figure the sum of angles a, b
and c is and by which property?
Answer: 180 °, Angle Sum Property

25. 11) In the following figure show Exterior angle
property?
Answer: ∠d= ∠a + ∠b

26. 12) In the following figure ∠a = ∠b by which
property?
Answer: Vertically Opposite angles

27. Made by : Samyak Jain