JEE Main Chemistry numerical 251: If the roots of z²−40z+391=0 are r and s, enter r+s.
Correct Answer: 40
Explanation:
Vieta gives r+s=40.
MCQ Collection
JEE Main Chemistry Numerical MCQs
Practice JEE Main Chemistry Numerical questions with answers and explanations.
JEE Main Chemistry numerical 243: Enter the area of a triangle with base 15 and height 11.
Correct Answer: 82.5
Explanation:
Area=½×15×11=82.5.
JEE Main Chemistry numerical 244: A sequence starts at 32 and each term is three times the preceding term. Enter the second term.
Correct Answer: 96
Explanation:
96
JEE Main Chemistry numerical 245: Evaluate 17(4+1).
Correct Answer: 85
Explanation:
17×5=85.
JEE Main Chemistry numerical 242: Enter the positive value of |14²−6|.
Correct Answer: 190
Explanation:
190
JEE Main Chemistry numerical 241: If the roots of z²−31z+234=0 are r and s, enter r+s.
Correct Answer: 31
Explanation:
Vieta gives r+s=31.
JEE Main Chemistry drill numerical 1039: A sequence starts at 19 and each term is three times the preceding term. Enter the second term.
Correct Answer: 57
Explanation:
57
JEE Main Chemistry drill numerical 1040: Evaluate 7(18+1).
Correct Answer: 133
Explanation:
7×19=133.
JEE Main Chemistry drill numerical 1041: If the roots of z²−14z+48=0 are r and s, enter r+s.
Correct Answer: 14
Explanation:
Vieta gives r+s=14.
JEE Main Chemistry drill numerical 1042: Enter the positive value of |9²−11|.
Correct Answer: 70
Explanation:
70
JEE Main Chemistry drill numerical 1043: Enter the area of a triangle with base 10 and height 16.
Correct Answer: 80
Explanation:
Area=½×10×16=80.0.
JEE Main Chemistry drill numerical 1044: A sequence starts at 15 and each term is three times the preceding term. Enter the second term.
Correct Answer: 45
Explanation:
45