Achievers Section provides Free Mathematics Olympiad Practice Paper for Class 8 with answers . Mathematics Olympiad class 8 Practice Paper helps in revision and gives good practice in solving any question in the Olympiad exam.
Mathematics Olympiad Practice paper
1. Find the missing number, if a certain rule is followed either row-wise or column-wise.
A. 1331
B. 121
C. 1150
D. 1911
Show Answer
A
Explanation:
The rule followed is:
(4 + 0 + 3)³ = 7³ = 343
(5 + 1 + 4)³ = 10³ = 1000
Similarly,
(3 +2 + 6)³ = 11³ = 1331
2. In a certain code language, if DEFENSIVE is coded as FCHCPQKTG, then how will PROTECTED be coded in the same code language?
A.TORPEDETC
B. RTQUDARCB
C. RPQRGAVCF
D. EFUDFUPSQ
Show Answer
C
Explanation:
3. Select the correct mirror image of the given combination of letters and numbers, if the mirror is placed vertically to the left.
SO73CC22ER
Show Answer
B
4. How many 3’s are there in the given sequence, each of which is immediately preceded by an odd digit but not immediately followed by an even digit?
4 5 8 3 4 6 2 5 3 7 9 8 1 0 2 3 4 9 6 8 1 3 5 5
A. None
B. One
C. Two
D. Three
Show Answer
C
Explanation:
5. A, B, C, D,E, F, G and H are eight friends sitting around a circular table facing the centre. A sits second to the left of D, who is third to the left of E. C sits third to the right of G, who is not an immediate neighbour of E. H sits third to the right of B, who sits second to the right of G. Who sits between D and C?
A. B
B. H
C. G
D. E
Show Answer
A
Explanation:
6. A square transparent sheet with a pattern and a dotted line on it is given. Select a figure from the options as to how the pattern would appear when the transparent sheet is folded along the dotted line.
Show Answer
A
Explanation:
7. Find the numbers of triangles formed in the given figure.
Show Answer
D
Explanation:
8. If ‘-’ stands for ‘+’ ‘+’ stands for ‘-’, ‘x’ stands for ‘÷’ and ‘÷’ stands for ‘x’, then which of the following is correct?
A. 40 – 10 + 20 x 10 ÷ 4 = 40
B. 10 – 8 ÷ 4 x 8 + 9 = 5
C. 31 + 5 x 3 ÷ 4 – 9 = 21
D. 40 – 30 x 10 + 5 ÷ 7 = 10
Show Answer
B
Explanation:
After changing the symbols, we get
A. 40 + 10 -20 ÷ 10 x4
= 40 +10 – 2 x 4
= 40 + 10 – 8 = 42 ≠ 40
B. 10 + 8 x 4 ÷ 8 – 9
= 10 + 8 x ½ – 9 = 10+ 4 – 9 = 5
C. 31 – 5 ÷ 3 x 4 + 9
=31- 5/3 x 4 + 9
= 31 – 20/3 + 9
=40- 20/3 = 100/3 ≠ 21
D. 40 + 30 ÷ 10 – 5 x 7
= 40 + 3 – 35 = 8 ≠ 10
9. If ‘M x N’ means M is the daughter of N’, ‘M + N means is the father of ‘N’, ‘M ÷ N’ means ‘M is the mother of N’, and ‘M’ – ‘N’ means ‘M’ is the brother of ‘N’, then in the expression ‘P ÷ Q + R – T x K’, how is P related to K?
A. Daughter-in-law
B. Mother-in-law
C. Aunt
D. Mother
Show Answer
B
Explanation:
P ÷ Q + R – T x K’ means P is the mother of Q who is the father of R. Also, R is the brother of T, who is the daughter of K. So, K is the mother of R and T. Also, Q is husband of K. So P is the mother-in-law of K.
10. Select a box from the options that is similar to the box formed when the given sheet of paper is folded to form a box.
Show Answer
B
ANSWER KEY
1.(A)
2.(C)
3.(B)
4.(C)
5.(A)
6.(A)
7.(D)
8.(B)
(9.(B)
10.(B)
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