It's even
Square numbers 16, 25, 36, 49, 64, 81, 100
The probability is 21/36 = 7/12
25 is odd
72 is not an odd number because it is divisible by 2. 72/2 = 36.
Only 9 and 15 are odd so the rest can be rejected. 9 is not a triangular number so only 15 is odd and a triangular number.
It's even
It is even.
Square numbers 16, 25, 36, 49, 64, 81, 100
The probability is 21/36 = 7/12
25 is odd
72 is not an odd number because it is divisible by 2. 72/2 = 36.
Even numbers are divisible by 2, and odd numbers are not. 36/2=18, so 36 is an even number.
Well, well, well, look at you trying to stump me with a little math puzzle. The pattern here is adding 5, then 6, then 7, then 8... So, following that logic, the next number in the sequence would be 45. Keep 'em coming, I'm ready for more brain teasers!
71 is the 36th odd number. To find the "nth" odd number, multiply the term number (ex: 36) by two, then subtract one.
6 times 6 = 36, so yes, 36 is a square. 1+2 = 3 3+3 = 6 6+4 = 10 10+5 = 15 15+6 = 21 21+7 = 28 28+8 = 36, so yes, 36 is a triangular number
That number is 36.