# Math Puzzle 1

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**1)what does ♣ stand for?**

7 ♣ 3 = 17

5 ♣ 3 = 13

8 ♣ 3 = 19

4 ♣ 2 = 10

2 ♣ 5 = 9

7 ♣ 9 = 23

**2) What does ⊕ stand for?**

7 ⊕ 3 = 4

2 ⊕ 1 = 1

9 ⊕ 6 = 3

8 ⊕ 4 = 4

8 ⊕ 3 = 5

**3) Match the following numbers which give this relation: x → x = 8**

A B

8 17

25 0

37 28

20 45

34 26

**4) A math maniac arranged his Δ as in the following pattern**

a) If there are ten rows, can you find the total number of Δ without actually counting?

b) If there are 20 rows, how many Δ will be there in all?

**5) Can you recognize a pattern for the total number of triangles? Fill this chart and try.**

Rows | 1 | 2 | 3 | 4 | 5 | 6 | 7 |

Total Δ | 1 | 3 | 6 | 10 | 15 | --- | --- |

**6) How is 12% expressed as a decimal fraction?**

(1) 0.5 (2) 0.05 (3) 0.005 (4) 0.0005

**7) It was Wednesday on July 15, 1964. What was the day on July 15, 1965?**

Thursday (2) Tuesday (3) Friday (4) None of these

**8) If March 1 of a leap year fell three days after Friday, what day of the week will dawn on November 22?**

Saturday (2) Sunday (3) Thursday (4) None of these

**9) Find the next number in the series : 235, 346, 457……**

578 (2) 568 (3) 468 (4) 558

**10) How is 3/4 expressed as percentage?**

0.75% (2) 60% (3) 75% (4) 7.5%

**11)The perimeter of a rectangle is 60 metres. If its length is twice its breadth, then its area is:**

200 m

^{2}(2) 180 m

^{2}(3) 160 m

^{2}(4) 220 m

^{2}

12) A man spends a fixed amount per month on petrol. The trend with every hike in price of petrol is as follows:

What will be consumption when there price is Rs. 6 a litre?

$ /Liters: | 1.5 | 2 | 3 | 4.5 | 6 |

Liters : | 60 | 45 | 30 | 20 | ? |

What will be consumption when there price is Rs. 6 a litre?

(1) 12 (2) 15 (3) 18 (4) 13.5

**13) In a class there are two sections A and B. If 10 students of section B shift over to section A, the strength of A becomes three times the strength of B. But if 10 students shift over from A to B, both A and B become equal in strength. How many students are there in sections A and B?**

1)50 and 30 (2) 45 and 15 (3) 90 and 40 (4) 80 and 40

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