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math & puzzles Online Quiz - 8

Description: math & puzzles Online Quiz - 8
Number of Questions: 20
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Tags: math & puzzles
Attempted 0/20 Correct 0 Score 0

Which one of the words given below is different from others ?

  1. Orange

  2. Grape

  3. Apricot

  4. Mango


Correct Option: C

AI Explanation

To answer this question, we need to analyze each option and identify the word that is different from the others.

Option A) Orange - This option is a fruit, just like the other options. Option B) Grape - This option is a fruit, just like the other options. Option C) Apricot - This option is the correct answer. While it is also a fruit, it is different from the others because it is the only one that is not a citrus fruit. Option D) Mango - This option is a fruit, just like the other options.

Therefore, the correct answer is C) Apricot, as it is different from the others because it is not a citrus fruit.

Complete the series: 5, 20, 24, 6, 2, 8, ?

  1. 12

  2. 32

  3. 34

  4. 36


Correct Option: A

3, 5, 11, 14, 17, 21

  1. 21

  2. 17

  3. 14

  4. 3


Correct Option: C

8, 27, 64, 100, 125, 216, 343

  1. 27

  2. 100

  3. 125

  4. 343


Correct Option: B

10, 25, 45, 54, 60, 75, 80

  1. 10

  2. 45

  3. 54

  4. 75


Correct Option: C

396, 462, 572, 396, 427, 671, 264

  1. 396

  2. 427

  3. 671

  4. 264


Correct Option: B

6, 9, 15, 21, 24, 28, 30

  1. 28

  2. 24

  3. 21

  4. 30


Correct Option: A

1, 4, 9, 16, 23, 25, 36

  1. 9

  2. 23

  3. 25

  4. 36


Correct Option: B

1, 4, 9, 16, 20, 36, 49

  1. 1

  2. 9

  3. 20

  4. 49


Correct Option: C

2, 5, 10, 17, 26, 37, 50, 64

  1. 50

  2. 26

  3. 37

  4. 64


Correct Option: D

10, 14, 16, 18, 21, 24, 26

  1. 26

  2. 24

  3. 21

  4. 18


Correct Option: C

16, 25, 36, 72, 144, 196, 225

  1. 36

  2. 72

  3. 196

  4. 225


Correct Option: B

1 3 3 6 5 9 7 12 9

  1. 15

  2. 13

  3. 14

  4. 10


Correct Option: A

There is a clock that has a special way of telling the time. It does not have any hands or numbers on it, but it has a chimer. If the time is 1 o'clock, it chimes once. If the time is 2 o'clock, it chimes twice, and so forth. The time gap between any two chimes is 3 seconds. How many seconds would it take you to know the time, after the first chime is heard, if it is 6 o'clock?

  1. 16

  2. 14

  3. 18

  4. 24


Correct Option: C
Explanation:

To solve this question, you need to determine the number of chimes and the time gap between each chime from 1 o'clock to 6 o'clock.

At 1 o'clock, there is 1 chime. At 2 o'clock, there are 2 chimes. At 3 o'clock, there are 3 chimes. At 4 o'clock, there are 4 chimes. At 5 o'clock, there are 5 chimes. At 6 o'clock, there are 6 chimes.

The time gap between each chime is 3 seconds.

To calculate the time it takes to know the time after the first chime, you need to add up the time gap between each chime.

For example, to know the time after the first chime at 6 o'clock, you need to add up the time gap between each chime from 1 o'clock to 6 o'clock:

(1-1) + (2-1) + (3-1) + (4-1) + (5-1) + (6-1)

Simplifying this, you get:

(0) + (1) + (2) + (3) + (4) + (5)

Adding these numbers together, you get a sum of 15.

However, this sum does not include the first chime, so you need to add 3 more seconds to account for the time it takes for the first chime to be heard.

Therefore, the total time it takes to know the time after the first chime at 6 o'clock is 15 + 3 = 18 seconds.

Hence, the correct answer is C. 18.

There is a village that has five fortune tellers. The first fortune teller's prediction has 75 % chance of being correct. The second has 56 % chance of being correct, the third 49 %, the fourth 26 %, and the fifth 9 %. If you were trying to get the best prediction of your future, which fortune teller would you go to?

  1. First

  2. Second

  3. Third

  4. Fourth

  5. Fifth


Correct Option: E

AI Explanation

To determine the best fortune teller to go to for the most accurate prediction, we need to consider the probability of each fortune teller's prediction being correct.

Let's analyze each option:

Option A) First - The first fortune teller has a 75% chance of being correct. Option B) Second - The second fortune teller has a 56% chance of being correct. Option C) Third - The third fortune teller has a 49% chance of being correct. Option D) Fourth - The fourth fortune teller has a 26% chance of being correct. Option E) Fifth - The fifth fortune teller has a 9% chance of being correct.

Since we want the best prediction, we should choose the fortune teller with the highest probability of being correct. Among the given options, the fifth fortune teller has the lowest chance of being correct (9%). Therefore, the correct answer is option E) Fifth.

Choosing the fortune teller with the highest probability of being correct increases the likelihood of receiving an accurate prediction.

A number of children are standing in a circle. They are evenly spaced and the 5th child is directly opposite the 18th child. How many children are there altogether?

  1. 14

  2. 28

  3. 32

  4. 64

  5. 20


Correct Option: B

AI Explanation

To solve this problem, we can use the concept of divisibility and remainders.

Let's assume that there are "n" children standing in the circle.

Since the 5th child is directly opposite the 18th child, we can say that the distance between them is half of the total number of children minus 1.

So, the distance between the 5th and 18th child is (n/2 - 1).

Since they are evenly spaced, we can also say that the distance between the 5th and 18th child is (18 - 5) = 13.

Therefore, we have the equation: (n/2 - 1) = 13.

Now, let's solve for "n":

n/2 - 1 = 13 n/2 = 14 n = 28

Therefore, there are 28 children altogether.

The correct answer is B) 28.

It was Diane 's first day at school. The teacher suggested that it would be a good idea for each child to meet every other child in the class. The teacher said, "When you meet, please shake hands and introduce yourself by name." If there were 15 children in the class, how many total handshakes were there?

  1. 100

  2. 80

  3. 60

  4. 105

  5. 210


Correct Option: D

A rich merchant had collected many gold coins. He did not want anybody to know about them. One day, his wife asked, "How many gold coins do we have?" After pausing a moment, he replied, "Well! If I divide the coins into two unequal numbers, then 29 times the difference between the two numbers equals the difference between the squares of the two numbers." The wife looked puzzled. Can you help the merchant's wife by finding out how many gold coins they have?

  1. 19

  2. 29

  3. 39

  4. 41

  5. 9


Correct Option: C

Which letter replaces the question mark ?

  1. E

  2. M

  3. N

  4. O


Correct Option: B
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