Start your brain and Exercise 1 mental exercise every Monday

1. There are two men and two women with different sexually transmitted diseases. Now there are two condoms. Q: how can we make every man have a relationship with every woman, but don't get sick?

2. If you ask a worker to work for you for seven days, the reward for the worker is a golden stripe. The golden bars are evenly divided into seven connected segments. You must give them a golden bar at the end of each day. If you only make two breaks, how do you pay for your workers?

3. The salesman visits Li Tai to know the age of the three sons. Li Tai tells him that the age of the three sons is multiplied by 36. The salesman asked Li to give him more information. Li told him that the total age of the three sons was exactly the number of Chen's house number. When the salesman knew it, he went to check Chen's house number and asked Li to give him more tips. Li said, "Oh! Today is the birthday of my eldest son, "said the salesman." I know their age !」 The question is: What are the ages of the three sons of Li Tai?

4. a c expression is provided to determine whether the given integer is a power of 2.

5. You must take one tablet a and one tablet B each day. This kind of medicine is very expensive and you don't want to waste anything. One day, you open the medicine bottle containing tablet a, pour out a tablet and put it in your hand; then open another medicine bottle, but accidentally pour out two pills. Now you have a tablet a and two tablet B in your hand, and you cannot tell which is a and which is B. How can you strictly follow the prescription to take pills without any waste?

 

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Answer 1:
1. Men wear two TT and female 1 ml on the first day.
2. Remove one and keep it clean. Give the male 2, male 2, and female 1 ml.
3. MALE 1 and female 2 ml
4. Set the t of male 1 to the T of male 2 and the ml of male 2.

Answer 2:
The two breaks should be divided into three parts, and the gold bars should be divided into three parts: 1/7, 2/7, and 4/7. In this way, 1st days can be given to him; 1/7 days will be given to him 2nd days, so that he can retrieve 2/7; 1/7 days will be given to him 3rd days, plus the original 1/7 is 2/7; 4th days to give him the 4/7 yuan, let him retrieve the two 1/7 and 2/7 yuan of gold; 5th days, then give him 1/7; 6th days and 2nd days; the 7th that was retrieved from him in 1/7 days.

Answer 3:
The three sons are nine years old, two sons two years old, and three sons two years old.
Based on the fact that the three sons are 36 years old
1x1x36 = 36
2x2x9 = 36
2x3x6 = 36
3x3x4 = 36
3x12x1 = 36
6x6x1 = 36
1x4x9 = 36
18x2x1 = 36
The third person's age is the house number
1 + 1 + 36 = 38
2 + 2 + 9 = 13
2 + 3 + 6 = 11
3 + 3 + 4 = 10
3 + 12 + 1 = 16
6 + 6 + 1 = 13
18 + 2 + 1 = 21
1 + 4 + 9 = 14
But the salesman is still unclear, it may only be less than, 9, 6, 6, 1 according to "Today is the boss's birthday" can be assumed to be 2, 2, 9

Answer 4:
(B & (b-1) = 0

Answer 5:
Cut each of the three medicines into two halves and place them in two heaps. Take A tablet A and cut it into two halves. Then add the first half of A to each heap. Now, each heap of pills exactly contains two half-slices of A and two half-slices of B. Take a bunch of them a day.