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If P means greater than (>)'; Q means less than (<)'; R means 'not greater than '; S means 'not less than ()' and T means equal to (=)', then consider the following statements:
1. If 2x(S)3y and 3x(T)42, then 9y(P) 8z.
2. If x(Q)2y and y(R)z, then x(R)z.
Which of the statements given above is/are correct?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Correct option 4: Neither 1 not 2
Statement 1: “If 2x is not less than 3y AND 3x equals 4z, then 9y is greater than 8z”
Analysis: 1. From 3x equals 4z, we can say x equals 4z/3 2. Putting this in first condition: 2(4z/3) is not less than 3y 3. Simplifying: 8z/3 is not less than 3y 4. Multiplying both sides by 3: 8z is not less than 9y 5. Therefore: 9y is less than or equal to 8z 6. But statement claims 9y is greater than 8z 7. This is a contradiction
Statement 2: “If x is less than 2y AND y is not greater than z, then x is not greater than z”
Analysis: 1. From first condition: x < 2y 2. From second condition: y ≤ z 3. Putting these together: x < 2z 4. However, x < 2z does not guarantee that x ≤ z 5. Counter example: Let z = 1, y = 1, x = 1.9 – Here x < 2y is true (1.9 < 2) – y ≤ z is true (1 ≤ 1) – But x ≤ z is false (1.9 is not ≤ 1)
Therefore, both statements are false.
By: sunny bhonsle ProfileResourcesReport error
Pooja Rani Mittal
S means not less than and R means not greater than ..so it implies that S is greater than or equal to and same way for R.....so i guess there is something not right in considering S and R interpretation ..please clarify
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