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3.The discriminant of the quadratic equation 4x2 - 6x + 3.0 is(A) 12(B) 84(c) 23D) - 12For the following frequency distribution:Class: 0-5 5-10 10-15 15 - 20 20 - 25Frequency: 8 10 19 25 8The upper limit of median class is(A) 15(B) 10(C) 20(D) 25 |
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Answer» kuch ni mode median ka hai formula lagega Bhai sahab question no. 3 ans:DD=b²-4ac. =(-6)²-4(4)(3). a=4,b=-6,=36-48. c=3=-12 question 4total(n)=60=n/2=60/2=30so,median class=20-25upper limit=20 median is a 20 and frequency is and his sum is upper limit is 15 -12 (3) D Are the answer to given questions (4) D Question no÷3Answer÷ D) -12 answer is c of this question 4rth question answer-12 upper limit of median class is 20 d=b^2-4ac36-4*4*3d=-12 20_25 it is a correct answer answer c is correct answer for this question iska answer 15 aayega |
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