Which will result in a difference of squares?
2 answers:
Answer:
The correct option is 3.
Step-by-step explanation:
The difference of squares is defined as
In option 1,
This expression is a perfect square, therefore this is not the difference of squares. Option 1 is incorrect.
In option 2,
This expression is a perfect square, therefore this is not the difference of squares. Option 2 is incorrect.
In option 3,
This expression is the difference of squares., therefore Option 3 is correct.
In option 4,
This expression is a perfect square, therefore this is not the difference of squares. Option 4 is incorrect.
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Answer:
Probability of N Divisible by 3 - 0.33
Probability of N Divisible by 5 - 0.2
Probability of N Divisible by 7 - 0.413
Probability of N Divisible by 15 - 0.066
Probability of N Divisible by 105 - 0.0095
Step-by-step explanation:
Given data:
Integer N {1,2,.....10^3}
Thus total number of ways by which 1000 is divisible by 3 i.e. 1000/3 = 333.3
Probability of N divisible by 3 {N%3 = 0 }
total number of ways by which 1000 is divisible by 5 i.e. 1000/5 = 200
Probability of N divisible by 5 {N%5 = 0 }
total number of ways by which 1000 is divisible by 7 i.e. 1000/7 = 142.857
Probability of N divisible by 7 {N%7 = 0 }
total number of ways by which 1000 is divisible by 15 i.e. 1000/15 = 66.667
Probability of N divisible by 15 {N%15 = 0 }
total number of ways by which 1000 is divisible by 105 i.e. 1000/105 = 9.52
Probability of N divisible by 105 {N%105 = 0 }
similarly for N is selected from 1,2.....(10)^k where K is large then the N value. Therefore effect of k will remain same as previous part.