book Maths Puzzle Numerical Ability

solve log base 2 of quantity x + 1 minus log base 4 of x equals 1

log2 of (x+1) minus log4 of x = 1

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solve system using elimination x + 2y = 7 3x - 2y = -3 In A.D. 1054, Chinese astronomers observed the light from a supernova in the night sky. This supernova was the incredibly powerful origin of what is now the Crab Nebula.
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