The letters inside the circles given in the figure below represent digits from 1 to 9, such that the sum of any three numbers which are connected in a straight line is equal.It is also known that- For any pair of two numbers, diametrically opposite to one another, the number represented by the alphabet which appears before the other one in the English dictionary is smaller than its pair. Each one of E and F does not represent 4. A, B and G are prime numbers and X is not a perfect square. Q. What is the number represented by G?a)2b)3c)7d)Cannot be determinedCorrect answer is option 'A'. Can you explain this answer?

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The letters inside the circles given in the figure below represent digits from 1 to 9, such that the sum of any three numbers which are connected in a straight line is equal.
It is also known that-

For any pair of two numbers, diametrically opposite to one another, the number represented by the alphabet which appears before the other one in the English dictionary is smaller than its pair.
Each one of E and F does not represent 4.
A, B and G are prime numbers and X is not a perfect square.

Q. What is the number represented by G?

a)
2
b)
3
c)
7
d)
Cannot be determined

Correct answer is option 'A'. Can you explain this answer?

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The letters inside the circles given in the figure below represent dig...

It is given that each set of 3 numbers forming a straight line gives the same sum, let's say 'K'.
∵ A, B, C, D, E, F, G, H and X represents numbers from 1 to 9.
Sum of all the numbers

A+B+X = K .... (1)
C+D+X = K .... (2)
E+F+X = K .... (3)
G+H+X = K .... (4)
Adding all four above equations, we get:
A+B+C+D+E+F+G+H+X+3X= 4K
⇒ 45+ 3X= 4K
⇒ 3(15+X) = 4K.
∴ K should be a multiple of 3 and 4K should be greater than 45.
When K= 12, we have:
45 + 3X = 48
⇒ X = 1---- Case 1(Not Possible because X is not a perfect square)
When K= 15, we have 45+3X= 60 and X = 5---- Case 2.
When K=18, we have 45+3X= 72 and X = 9----- Case 3 (Not possible because X is not a perfect square)
We can see from equations (1), (2), (3) and (4) that A+B= C+D= E+F= G+H
Only Possibility X=5 and Sum =15
When sum= 15 and X=5.
A+B= C+D= E+F= G+H= 15-5= 10.
And hence any pair of diametrically opposite letters can represent pairs- (1,9), (2,8), (3,7) and (4,6)
Using the extra information given in the question, we can say that the pair that contains two prime numbers are (A,B)
∵ Only (3,7) forms such a pair, A=3 and B= 7 (A takes the lower number of the two because of the 1st point mentioned in the question).
Also, the only other prime number left is 2, which is taken up by G. If G=2, H=8
We are now left with pairs (E,F) and (C,D) which can take either (1,9) or (4,6).
∵ Neither E nor F is 4, E and F must represent 1 and 9 respectively and therefore C and D takes the values 4 and 6 respectively.
So, A= 3, B=7, C=4, D=6, E=1, F=9, G=2, H=8 and X=5.

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The letters inside the circles given in the figure below represent digits from 1 to 9, such that the sum of any three numbers which are connected in a straight line is equal.It is also known that- For any pair of two numbers, diametrically opposite to one another, the number represented by the alphabet which appears before the other one in the English dictionary is smaller than its pair. Each one of E and F does not represent 4. A, B and G are prime numbers and X is not a perfect square. Q. What is the number represented by G?a)2b)3c)7d)Cannot be determinedCorrect answer is option 'A'. Can you explain this answer?

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