top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

What is the smallest positive integer that cannot be represented using these conditions?

0 votes
204 views

Below shows the first 5 positive integers formed by using the four mathematical operators (+ - * /) only on the digit 4 four times.

1 = 44 / 44
2 = 4*4 / (4+4)
3 = (4+4+4) / 4
4 = 4 + (4*(4-4))
5 = (4+(4*4)) / 4

What is the smallest positive integer that cannot be represented using these conditions?

posted Aug 10, 2016 by Kuldeep Apte

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

2 Answers

0 votes

6 = ( (4 + 4) / 4 ) + 4 = 6
7 = 4 - (4 / 4) + 4 = 7
8 = 4 * 4 - (4 + 4) = 8
9 = 4 + 4 + ( 4 / 4) = 9
10 = (44-4)/4 = 10

Ans :- 11

answer Aug 11, 2016 by Neha Gupta
0 votes

ANSWER:11
11 is the smallest positive integer that cannot be represented using those conditions

answer Sep 14, 2017 by Mogadala Ramana



Similar Puzzles
+1 vote

What are the largest and smallest 5-digit numbers that satisfy the following conditions?

A. Each digit of the number is a prime digit.
B. Each successive pair of digits forms a 2-digit number that is NOT a prime number.
C. Each of the prime digits must appear at least once in the 5-digit number.

+1 vote

We are given a positive integer N. Two of its positive divisors are chosen and the differences between N and these two divisors are 270 and 280 respectively.

Find the number of possible value(s) of N?

...