10 Puzzles (iii)

Source: Internet
Author: User

First question

The first question is relatively simple, the two sides can form an intermediate image, select: H

Second question

Little Red and small blue are teacher Li's students, Miss Li's birthday is M-D day, is the following 10 groups of one day, Li told the M-value of small red, D value told the small blue, through the small red and small blue dialogue you can know Miss Li's birthday is what day? Please follow the dialogue below to infer which day Mr. Li's birthday is ()
Little Red said: If I do not know, little blue must not know
Little Blue said: I do not know, but now I know
Little Red said: Oh, then I know.

      • March 4
      • March 5
      • March 8
      • June 4
      • June 7
      • September 1
      • September 5
      • December 1
      • December 2
      • December 8

Third question

A question about the refueling of aircraft, known:
Each plane has only one fuel tank, and the planes can refuel each other (note that there is no refueling machine)
A tank of oil for a plane to fly around the earth half a circle,
Question: At least a few planes are needed to get at least one plane round the Earth back to the airport at takeoff? (all aircraft take off from the same airport and must be safely returned to the airport, not allowed to land halfway, no airfield in the middle)

      • 3
      • 4
      • 5
      • 6

Question Fourth

A non-uniform motherboard, burning from head to tail to 2 hours, at least a few pieces of the same motherboard, to accurately measure the 2 hours and 30 minutes?

Three, you can. First, take a root and burn it from both ends. is one hours. Take another one and burn it from both ends for another one hours. The third and second roots burn at the same time, but the third one burns from the end, and the second burns one hours and leaves one hours. Then burn the third one from both ends for half an hour. So the total is 3.

Question Fifth

B, move each block to the right by one grid (move out of the first column of the row, the last one in the third row, the first row) and then the fork is rounded, the circle is triangular, and the triangular fork is changed.

Question Sixth

Question Seventh

In all 2 digits, how many digits are 10 digits larger than single digits? (45)

Question Eighth

The subject is the octal algorithm, in the octal algorithm, a bit of the number reached 8 o'clock to go forward, with the decimal 10 forward 1 is the same reason, so 137+276 calculation, the first is the 7+6=13, eight in the system is 13-8=5, that is, more than 5 into a bit, the second is 3+7= 10, there is a just in, a total of 10+1=11, eight 11-8=3 in the system, that is, more than 3 into a bit, the third is 1+2=3, there is a just into the one, 3+1=4, less than 8 do not carry directly written, so 137+276=435, the same can be calculated 731+672=1623

Question Nineth

Question Tenth

The number of coins in the savings box is equal to 2 points and 5 cents, and the sum of 2 and 5 cents is equal, Q: How many dollars could it be? ()

The problem with the father, there's money in it.

Set 2 points and 5 cents are X, 2 cents, y Zhang, assuming there is no 5 cents (possibly line): 0.02x+0.02y=0.05x is y=3x/2; to make Y an integer, only x is an even number. The amount of money =0.05x,4 an answer to the X is 40, 60, 80, 100, are even, so all possible.

10 Puzzles (iii)

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.