One possible answer is 23.
80 is an even number.
An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. 80 is an even number.
-13 is an odd number which is less than 5.
1st odd number . . . 1 (1 less than double 1)2nd odd number . . . 3 (1 less than double 2)3rd odd number . . . 5 (1 less than double 3)4th odd number . . . 7 (1 less than double 4)5th odd number . . . 9 (1 less than double 5)Are you seeing a pattern yet ?6th odd number . . . 11 (1 less than double 6)7th odd number . . . 13 (1 less than double 7)...Qth odd number . . . . (1 less than double Q)
1st odd number . . . 1 (1 less than double 1)2nd odd number . . . 3 (1 less than double 2)3rd odd number . . . 5 (1 less than double 3)4th odd number . . . 7 (1 less than double 4)5th odd number . . . 9 (1 less than double 5)Are you seeing a pattern yet ?6th odd number . . . 11 (1 less than double 6)7th odd number . . . 13 (1 less than double 7)...Qth odd number . . . . (1 less than double Q)
There are 12 numbers less than 150 which have an odd number of factors: 1,4,9,16,25,36,49,64,81,100,121,144.
'5' & '15' are odd numbers less than 20 , and are also multiples of '5'.
49
An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. 80 is an even number.
The only odd positive integer less than 3 is 1.
This answer cannot be answered because two consecutive numbers consist of one odd number and one even number, and the sum of an odd number plus an even number is always an odd number.
There are 44 positive integers less than 2,010 that have an odd number of factors.