FREE! Click here to Join FunTrivia. Thousands of games, quizzes, and lots more!

Logics and Riddles II Trivia Quiz

This is my second one in this category. Again, it's all about numbers. Enjoy.

A multiple-choice quiz by wimm. Estimated time: 3 mins.

Author
wimm

Time
3 mins

Type
Multiple Choice

Quiz #
48,517

Updated
Dec 03 21

# Qns
5

Difficulty
Average

Avg Score
3 / 5

Plays
16210

Last 3 plays: Guest 210 (4/5), davanvash (3/5), nikkanikachu (4/5).

Question 1 of 5

1. Fill in the blank: 4, 9, 25, 49, 121, ... ? Hint

137

169

154

162

NEXT>

Question 2 of 5

2. Take a 3 by 3 square. The first row reads 1, 2, 3. The second: 4, 5, 6. The last one: 14, 19, xx Which number is missing?

Answer: (number)

NEXT>

Question 3 of 5

3. Fill in the blank: 1, 3, 5, 11, 21, 43, ...? Hint

NEXT>

Question 4 of 5

4. Can you divide 10230 by 3 and get a natural number?

Yes

NEXT>

Question 5 of 5

5. The sum of the even numbers between 1 and 21 equals?

Answer: (number)

(Optional) Create a Free FunTrivia ID to save the points you are about to earn:

Select a User ID:

Choose a Password:

Your Email:

Most Recent Scores

Dec 16 2024 : Guest 210: 4/5
Dec 05 2024 : davanvash: 3/5
Nov 25 2024 : nikkanikachu: 4/5
Nov 18 2024 : Guest 5: 5/5
Nov 18 2024 : Guest 174: 4/5
Nov 07 2024 : Guest 73: 3/5
Nov 05 2024 : Guest 172: 3/5
Oct 23 2024 : Guest 73: 1/5
Oct 22 2024 : Harish123az: 3/5

Score Distribution

Quiz Answer Key and Fun Facts

1. Fill in the blank: 4, 9, 25, 49, 121, ... ?

Answer: 169

The list is formed by the squares of the prime numbers. 13 is the next prime number, and 13 x 13 = 169.

2. Take a 3 by 3 square. The first row reads 1, 2, 3. The second: 4, 5, 6. The last one: 14, 19, xx Which number is missing?

Answer: 24

Multiply the first row by 2 and the second row by 3. The sum of this gives you row 3.

3. Fill in the blank: 1, 3, 5, 11, 21, 43, ...?

Answer: 85

Each number is the previous multiplied by 2 +-1. 3 = 1 x 2 +1, 5= 3 x 2 -1, 11 = 5 x 2 +1, etc... So 43 x 2 -1 = 85. Or another solution might be: if the first number is A and the second B then the third number C is = 2A + B

4. Can you divide 10230 by 3 and get a natural number?

Answer: Yes

To check if a number can be divided by 3, just add up all the figures from the number and if this sum can be divided by 3, so can the original number. So: 1+0+2+3+0=6 and 6 can be divided by 3.

5. The sum of the even numbers between 1 and 21 equals?

Answer: 110

The formula: (n x (n+2)):4 with 'n' the highest even number of the serie. So 20 x 22 : 4 equals 110...

Source: Author wimm

This quiz was reviewed by FunTrivia editor gtho4 before going online.
Any errors found in FunTrivia content are routinely corrected through our feedback system.