No
Who says that ? There is no age, some people are wise, while others are not so
Out of 32 adult (permanent) teeth, most adults have 28(wisdom teeth extracted), or 24(wisdom teeth and one premolar in each quadrant extracted). Most adults in their 40's have the latter, because it was common to extract the 4 premolars for orthodontia at that time. Most younger adults have 28 teeth. Some adults have all 32. I would say the average adult has 28 teeth.
Some things that come in groups of 40 include a standard pack of playing cards, a standard pack of cigarettes, and a common size for a pack of beer or soda cans. In mathematics, 40 is also a highly composite number, meaning it has many factors. In a medical context, a normal adult human has 40 teeth, including wisdom teeth.
Middle age or in your 40's.
32. 4 incisors. 4 premolars and 4 molars. Top and bottom. Also 2 canines and 2 wisdom teeth per plate.
80 teeth 40 on top 40 on the bottom
40
40/13 = 3.08
40
No, you can vaguely tell the age however, by the length and wear on the teeth. The answer that I've seen is yes, that mature male horses have between 40 and 44 teeth, while mature females have 36-40. Yes, that may be true, however if both a mare and a gelding both have 40 teeth then there is no way to tell its gender. And why would you count teeth when you could just look underneith the horse or under the tail to see the gender.
2:1
a clouded leopard has about 40-60 teeth.