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Maths Puzzle
On planet LOGIKA, an alien digit φ is being used between 3 and 4 along with all the usual digit we use on earth. What will be the age of a 94 years old inhabitant of LOGIKA on earth?
A. 103
B. 104
C. 114
D. 115
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Others Other Question
What is the highest possible common factor of two consecutive terms of a sequence whose nth term is given by n² + 10?
A. 1
B. 2
C. 41
D. 59
Nimai wrote all natural numbers, none of whose digits is a prime number, in order. First ten numbers which Nimai wrote are as follows: 1, 4, 6, 8, 9, 10, 11, 14, 16, 18. What is the 123rd number, Nimai might be writing?
A. 646
B. 666
C. 816
D. 840