JEE Advanced Chemistry NAT numerical 3055: Evaluate 21(12+1).
Correct Answer: 273
Explanation:
21×13=273.
Practice Chemistry Numerical questions with answers and explanations.
21×13=273.
Vieta gives r+s=39.
524
24×15=360.
Vieta gives r+s=21.
2
Area=½×4×12=24.0.
66
6×6=36.
Vieta gives r+s=17.
49
Area=½×9×3=13.5.