There're three distinct whole numbers a,b,c displayed on three cards. In each round, each of three students picks one card randomly in turn then record their numbers. They play at least two rounds. If after the last round, the 1st one gets 20 points totally, the 2nd one gets 10, the 3rd one gets 9 and the 2nd one picks number c at the last round, then who picks number b at the first round?
A. The 1st one
B. The 2nd one
C. The 3rd one
D. Can't be found out
in a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is
In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is
The average of three numbers is 42. All three are whole positive number and are different from each other.
If the least number is 20, what could be the greatest possible number of the remaining two numbers?
Answer: ......
In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is \
Bài toán Violympic thách thức mọi thời đại bởi độ khó cực kì và khó hiẻu
One of the three brothers A,B and C took the golden apple. Their father asked them who took it and they answer as follow.
A: B took the golden apple.
B. I took the golden apple.
C. A took the golden apple.
Who took the golden apple, if only one the three brothers was telling the truth?
A. B
B. C
C. A
D. Nobody
Question 1:In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is____
Q2:Find the highest common factor of 147x and 98y if HCF(x;y)=1
Q3: A pattern of triangles is made from matches shown as follows
if there are 207 matches used, how many triangles has been formed
Question 1: Find the highest common factor of 147x and 98y if HCF(x;y)=1.
Question 2: In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is______
Question 3: A pattern of triangle is made from matches shown as follows:
If there 2017 matches used, how many triangles has been formed?
P/s: Please help me! If possible, write the detail answer! Thanks for your help!!!
Find all natural numbers having two digit , knowing that twice the units digit 1 more than the ten digit , and if we write that two digits in reverse order, we get a new number which is 27 less than the old one