The Brain Teasers: Their Answers

Good day people! how y'all doing? good i guess! So i promised i'll post the answers to the brain teasers i put up yesterday, and here they are!
lol! wait a minute...how many did you get right? 1? 6? maybe none? hehehe common be proud to be a dull brain lmao..just kidding sha...here they are tho:

1. They blame themselves because they were late getting back on the bus, and if they hadn't caused the delay the bus would have already passed the location of the mud slide.
   
    
2. 90mph is an alluring answer, but it's impossible. At 90mph the second lap would take 40 seconds. Grannie's first lap at 30mph took 2 minutes and traveling 2 miles in 2 minutes and 40 seconds is an average speed of 45mph. Traveling an average speed of 60mph for 2 miles would take 2 minutes and since the grandma's lap took all of those 2 minutes, even if Mario could break the sound barrier he wouldn't be able to average 60mph.
   
    
3. Because Oct 31 represents the octal (base 8) number 31, which, when converted to decimal, is 25. Dec 25 is short for Decimal 25, thus the two are equal.
   
    
4. Daughter-in-law. Her daughter's father is her husband (assuming she's only been married once and didn't have an affair and since I'm the married woman, I can say I haven't had an affair). This means John's son is her husband, so John is her father-in-law, making her the daughter-in-law.
   
    
5. The total loss was $95.
   $-20 = The wholesale cost of the mailbox
   $+100 = The money from Jack
   $-75 = The change paid to Courtney
   $-100 = To pay Jack back
   $-20 + $100 - $75 - $100 = $-95
   
   It's easy to think Hal lost $195 but that fails to account for the $100 used to make the change, which came from Jack, not Hal. Jack paid $100 in exchange for a worthless piece of paper, so the $100 was initially Jack's loss. Hal had made a $5 profit until Jack's discovery. If you guessed $100, that's arguably correct, but not making $5 in profit isn't a loss in the strictest sense of the word.
   
    
6. Sequoia, eulogia or miaoued are all good options, but there's an even shorter (and more obscure) word with all the vowels and not a single consonant: Iouea. It's not the kind of word you'd use at the dinner table, but it's listed in the Wikipedia dictionary as a genus of Cretaceous fossil sponges.
   
   If you got really tricky and tried to find a word that contained the letters in the phrase 'all of the vowels', you probably found, like I did, that there isn't one. But it was still worth checking.
   
7. 
   If you answered 1/2, you're not without comrades, but the generally accepted answer by statisticians (though not without debate) is 1/3. This is because there are four possible combinations: boy-boy, boy-girl, girl-boy and girl-girl. Since we are told one of the children is a boy (but we don't know if it's the first or second child), we can rule out the girl-girl combination, leaving three remaining options. Only one out of 3 is boy-boy, so we get a 1/3 chance.
   
8. The two people were a husband and an expectant wife, who gave birth to her baby.
   
9. 1. Open the refrigerator, put the giraffe in and close the door. It's not complicated.
   2. Open the refrigerator, take out the giraffe, then put in the elephant and close the door.
   3. The elephant. He's still in the refrigerator. After all, you just put him there.
   4. Jump into the river and swim across. The crocodiles are at the Lion King's animal meeting.
   I admit, this is not a typical brain teaser, but it amused me.
   
   
10. The word 'wrong'.
    
11. There are no stairs in any of the houses because they only have one story.
    
12. 9. If all but 9 died, there are 9 remaining live sheep.
    
13. There is no steam. It's an electric train.
    
14. All the passengers are married.
    
15. 4,100. If you got 5,000 you're not alone. 96% of test subjects get the wrong answer.
    
    
    And that's all there is to it...i'll drop some more later! see ya!