exam Maths Puzzle Numerical Ability

The probability that an individual is left-handed is 0.11. In class of 40 students, what is the probability of findind five left-handers?

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exam Other Question

6x+5x+1=0 Graph to find the solution of each system check each solution
2. y=x+1
x+y=-3
Help-the teacher skipped some parts of the chapter and now my daughter (and I) have no clue how to solve this. Thanks