Others Maths Puzzle

TG² = GOG where T, G, O are distinct single digit positive integers. Find O.

A. 0
B. 2
C. 7
D. 8

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Others Other Question

Consider a sequence of 9 consecutive integers. The average of first 7 integers is N. The average of last 7 integers is

A. N
B. N + 2
C. 3N/2
D. N + (7/9)
The remainder when 7²º²º is divided by 2400 is

A. 0
B. 1
C. 31
D. 1201