exam Maths Puzzle Numerical Ability

9x2+6x+1

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exam Other Question

Tell wether the number is prime or composite. If it is composite,write its prime factorization.

7.163

Any help with this equation would be GREATLY appreciated. You are in a cave with 5 green- or blue-eyed people who can see in the dark. Green-eyed people always tell the truth; blue-eyed people always lie. A says: "I see three pairs of gre