1.

Four numbers are chosen at random (without replacement) from the set {1,2,3,….20}. Statement -1 : The probability that the chosen number when arranged in some order will form an AP is 1/(85) Statement :2 If the four chosen number form an A.P. , then the set of all possiblevalue of common difference is {pm 1, pm 2, pm 3, pm4, pm5}

Answer»

Statement -1 is true , statement -2 is true , statement -2 is a correct EXPLANATION for statement -1
statement-1 is true, statement -2 is true , statement -2 is not a correct explanation for statement -1
Statement -1 is true, statement -2 is false
Statement -1 is false, Statement -2 is true.

Answer :C


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