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(A) Use two digits to make the smallest possible positive integer. (B) Five 3s can express 37: 37=33+3+3/3 Find another way to do it. (C) Use six identical digits to make 100. (Several solutions are possible.) (D) Use five 4s to make 55. (E) Use four 9s to make 20.
Answer: (A) 1 X 1; 1/1;2/2;ect....;1-0;2-1;and many others. (B) 37=333/3X3; 37=3 X 3 X 3 + 3/.3 (C) 99 + 99/99; 55+55- 5- 5; (666-66)/6 (D) 44 + 44/4=55. (E) 9 + 99/9=20.
Solution:
A driver of a car wants to cover a total distance of 1000 KM. Apart from the 4 tires of the car, he has also in his disposal a spare tire. If he wants to use equally all the tires of the car, how much distance each tire should cover?
Answer: 800 KM
Solution:
Let Tire numbers be 1,2,3,4,5
1) Use Tire 1234 for 0-200 km
2) Use Tire 1235 for 2000-400 km
3) Use Tire 1254 for 4000-600 km
4) Use Tire 1534 for 6000-800 km
5) Use Tire 5234 for 8000-1,000 km
As you may have noticed, each Tire is used 4 times so total of 200×4 = 800 KM
As we can see each Tire gets to run 800 km
Correct answer: 800 KM
Let Tire numbers be 1,2,3,4,5
1) Use Tire 1234 for 0-200 km
2) Use Tire 1235 for 2000-400 km
3) Use Tire 1254 for 4000-600 km
4) Use Tire 1534 for 6000-800 km
5) Use Tire 5234 for 8000-1,000 km
As you may have noticed, each Tire is used 4 times so total of 200×4 = 800 KM
As we can see each Tire gets to run 800 km
Correct answer: 800 KM