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Recent puzzles under tag number puzzle

0 votes
How many times does the digit 9 appear in all the numbers from 1 to 1000?
posted Jun 5, 2018 by anonymous
  • counting
  • number puzzle
0 votes
What is the next number in this sequence? 5; 6; 10; 17; 27; 40; 56; ?; ?
posted Jun 4, 2018 by Aastha Joshi
  • series
  • number puzzle
  • logic
+1 vote
What comes next in the sequence; 1, 3, 9, 31, ?
posted Jun 2, 2018 by Nikita Sehgal
  • number puzzle
  • series
  • logic
0 votes
What is the next number in the series - 8,202 ; 912 ; 102 ; 12 ; ?
posted Jun 1, 2018 by Rahul Vaidya
  • series
  • number puzzle
  • logic
0 votes
If first 17 positive integers are rearranged into a sequence such that sum of any two adjacent is a perfect square...
posted May 31, 2018 by anonymous
  • mathematical
  • number puzzle
0 votes
If you had a set of ten cards numbered 0 to 9 could you make five two-digit numbers which are all even?
posted May 31, 2018 by anonymous
  • logic
  • number puzzle
0 votes
What is the dividend of 22 divided by 7?
posted May 28, 2018 by Amrita
  • logic
  • number puzzle
  • mathematical
0 votes
What is the second least signifficant digit of {10 + sqrt(90)}^**********
posted May 27, 2018 by anonymous
  • number puzzle
  • logic
0 votes
How old is someone who has lived half a million hours?
posted May 27, 2018 by anonymous
  • logic
  • number puzzle
0 votes
If you wrote the numbers from 1 to 99 what would all the digits add up to?
posted May 25, 2018 by anonymous
  • number puzzle
  • logic
0 votes
N is a number where each digit is divisible by its place, it has to be atleast 5 digits and atleast 3 different digits?
posted May 24, 2018 by anonymous
  • number puzzle
  • logic
0 votes
Using the digits 1, 2, 3, 4 and 5 and one multiplication sign anywhere you like what is the largest number possible?
posted May 21, 2018 by anonymous
  • number puzzle
0 votes
If A != B and A^n + B^n is an integer for all positive integers n, must A and B both be the integers? [MCQ]
posted May 17, 2018 by Mohammad
  • number puzzle
  • mathematical
  • logic
  • algebra
0 votes
What is the next palindromic number after 72927?
posted May 17, 2018 by Mohammad
  • number puzzle
  • logic
0 votes
Using digits of 1999 in that order and operations +, -, x, /, and brackets can you make any of the numbers from 1 to 20?
posted May 11, 2018 by anonymous
  • logic
  • number puzzle
0 votes
Find the numbers between 100 and 1000 in which all digits are distinct?
posted May 10, 2018 by Mishthy Mukherjee
  • number puzzle
  • logic
0 votes
13 x 13 = 169 and 31 x 31 = 961. Can you find other numbers which give answers in reverse order?
posted May 10, 2018 by anonymous
  • number puzzle
  • logic
0 votes
If you wrote all the numbers from 0 to 600, how many times would the digit 5 appear?
posted May 9, 2018 by anonymous
  • logic
  • number puzzle
0 votes
Can you complete the table series puzzle by replacing the ?? with the correct number: 81 36 144, ?? 25 16, 64 100 49
posted May 8, 2018 by anonymous
  • number puzzle
+1 vote
Three consecutive numbers multiplied together give 3360, what are the numbers ?
posted May 8, 2018 by anonymous
  • number puzzle
0 votes
Which number has 2 digits, it is prime and it is 2 more than a square number?
posted May 7, 2018 by anonymous
  • number puzzle
  • mathematical
0 votes
What is the least positive integer n such that n!(n+1)!(2n+1)! - 1 yields a number ending with thirty digits of 9's?
posted May 3, 2018 by anonymous
  • number puzzle
  • algebra
0 votes
A number between 700 and 900 gives a remainder of 1 each time when divided by 2, 3, 4, 5, 6, 7 & 8. What is the number?
posted May 3, 2018 by anonymous
  • number puzzle
  • logic
0 votes
Find the ways to make 746 using a number and its reverse: example - 472 + 274 = 746
posted May 2, 2018 by anonymous
  • logic
  • number puzzle
–1 vote
how many numbers can you see?
posted May 1, 2018 by Charles Samuel
  • visual
  • number puzzle
+2 votes
Find natural number n such that (5n)! has 2018 trailing 0's?
posted Apr 30, 2018 by anonymous
  • number puzzle
  • mathematical
  • algebra
0 votes
What is the smallest positive integer ending in 1986 which is divisible by 1987?
posted Apr 30, 2018 by anonymous
  • number puzzle
  • logic
0 votes
What is the number if it is 1 less than a square number and it is not divisible by 3 or 7?
posted Apr 30, 2018 by anonymous
  • number puzzle
  • logic
+3 votes
Can you find the value of the missing number in the fourth circle?
posted Apr 26, 2018 by Pushpak Chauhan
  • number puzzle
  • logic
0 votes
Find the minimum value of n such that the equation 10^n/x = 1989 has an integer solution x where n is a natural number?
posted Apr 25, 2018 by anonymous
  • number puzzle
  • mathematical
  • algebra
+1 vote
How many different numbers can you make if you use the digits 1, 2, 3, 4 once each, in any order, and a times sign?
posted Apr 25, 2018 by anonymous
  • logic
  • number puzzle
+1 vote
What is the next number in the series. 15; 29; 56; 108; 208; ?
posted Apr 24, 2018 by Mridul
  • series
  • number puzzle
  • logic
0 votes
Are there more seconds in a year then hours in a century?
posted Apr 19, 2018 by anonymous
  • number puzzle
0 votes
Use five twos and as many plus signs as you need to make 28?
posted Apr 18, 2018 by anonymous
  • logic
  • number puzzle
0 votes
Make numbers 1 - 30 using the digits 2, 0, 1, 8
posted Apr 17, 2018 by anonymous
  • logic
  • number puzzle
0 votes
Find out how the numbers in the table are connected and then find the missing number.
posted Apr 12, 2018 by Brijesh Talwar
  • number puzzle
  • logic
+1 vote
What is the only whole number between one and ten which does not divide exactly into 360?
posted Apr 12, 2018 by anonymous
  • number puzzle
+1 vote
What is the next number in this series - 5, 22, 73, 226, ?
posted Apr 12, 2018 by Tapesh Kulkarni
  • number puzzle
  • series
  • logic
0 votes
What is the number if it has 3 digits (all different) and each digit is 3 times the one before?
posted Apr 10, 2018 by anonymous
  • number puzzle
+1 vote
How much is a small number from 650 to as big as 820?
posted Apr 10, 2018 by Shoayeb Khan
  • number puzzle
+1 vote
Can you find the connection between the numbers and then find the missing number in the given table?
posted Apr 9, 2018 by Yogeshwar Thakur
  • logic
  • number puzzle
  • mathematical
+1 vote
Solve the number series riddle by replacing the question mark with the correct number ?
posted Apr 9, 2018 by Divya Bharti
  • number puzzle
  • logic
0 votes
Using all digits from 1 to 6 once only, make three two-digit numbers which multiplied together give the smallest number?
posted Apr 8, 2018 by anonymous
  • number puzzle
+1 vote
If 2×3=15, 2×5=20 and 2×7=30 then 2×11=?
posted Apr 8, 2018 by anonymous
  • number puzzle
  • logic
+1 vote
Using digits 1, 2, 3, 4; find number of 10-digit sequences such that the difference between two consecutive digits is 1?
posted Apr 7, 2018 by anonymous
  • number puzzle
  • logic
+2 votes
Can you solve the maths equation by solving this equation ?
posted Apr 3, 2018 by Akriti
  • number puzzle
  • mathematical
  • logic
+2 votes
Substitute different digits (0. 1, 2 9) for different letters in the problem below and find the max value of MONEY?
posted Apr 1, 2018 by anonymous
  • number puzzle
  • logic
+2 votes
If 1111=O, 2222=R, 3333=X, 4444=T then 5555=?
posted Mar 30, 2018 by anonymous
  • number puzzle
  • logic
+1 vote
What is the next number in this series - 9, 27, 31, 155, 161, 1127, ?
posted Mar 30, 2018 by Varuna Magar
  • number puzzle
  • series
  • logic
0 votes
Find two square numbers, each of which uses all three digits 1, 9 and 6.
posted Mar 29, 2018 by anonymous
  • number puzzle
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