exam Maths Puzzle Numerical Ability

Solve for x: sqrt(2x-1) - sqrt(x+3) = 1

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exam Other Question

If there are 200 typographical error randomly distributed in a 500 page manuscript find the probability that a given page contains exactly three errors. harrriet gave wilbur a 50 yd head start. how long did it take her to catch wilbur if her speed was 8 yds per second and his was only 6 yds per second?