In a contest, there are four fruits (an apple, a banana, an orange, and a pear) which have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. There were 123 participants in the contest. The results are; 43 people guessed none correctly, 39 people guessed one correctly and 31 people have guessed two correctly. How many people guessed three correctly and how many people guessed all four correctly?
Answer: It is not possible to only get three correct because the fourth would also be correct. Therefore, the answer would be (123-43-39-31 = 10) 10 people guessed all four correctly.
Solution:
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Answer: A footprint.
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If 1+4=5, 2+5=12, and 3+6=21, what is 8+11? Viral math Puzzle answer
Answer: 8+11=96
Solution:
Correct Answer: 8+11=96
Solution: 1
If you look at first 3 Equations a + b means a + ab
a+b => a+ab
Let see now how it works for all equations ,
1 + 4 means 1 + 1(4) = 5
2 + 5 means 2 + 2(5) = 12
3 + 6 means 3 + 3(6) = 21
now will apply same formula for the last equation 8+11=?
8 + 11 means 8 + 8(11) = 96
So final answer is 96 is proved.
Solution : 2
1 + 4 = 5
5 + 2 + 5 = 12
12 + 3 + 6 = 21
21 + 4 + 7 = 32
32 + 5 + 8 = 45
45 + 6 + 9 = 60
60 + 7 + 10 = 77
77 + 8 + 11 = 96
Once again we get the answer of 96, that’s surprising!
Didn’t get 96? Check out the second way to solve the problem.
Alternate method :
a+b= a+b(sum of the previous equation)
1 + 4 = 5.
2 + 5 (plus the previous sum of 5) = 12.
3 + 9 (plus the previous sum of 12) = 21.
same logic will apply for last equation also
8 + 11 (plus the previous sum of 21) = 40.
Correct Answer: 8+11=96
Solution: 1
If you look at first 3 Equations a + b means a + ab
a+b => a+ab
Let see now how it works for all equations ,
1 + 4 means 1 + 1(4) = 5
2 + 5 means 2 + 2(5) = 12
3 + 6 means 3 + 3(6) = 21
now will apply same formula for the last equation 8+11=?
8 + 11 means 8 + 8(11) = 96
So final answer is 96 is proved.
Solution : 2
1 + 4 = 5
5 + 2 + 5 = 12
12 + 3 + 6 = 21
21 + 4 + 7 = 32
32 + 5 + 8 = 45
45 + 6 + 9 = 60
60 + 7 + 10 = 77
77 + 8 + 11 = 96
Once again we get the answer of 96, that’s surprising!
Didn’t get 96? Check out the second way to solve the problem.
Alternate method :
a+b= a+b(sum of the previous equation)
1 + 4 = 5.
2 + 5 (plus the previous sum of 5) = 12.
3 + 9 (plus the previous sum of 12) = 21.
same logic will apply for last equation also
8 + 11 (plus the previous sum of 21) = 40.
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