JEE Main 2026 · Session 2 · Shift 1 · Mathematics
Question 8
If the mean of the data Class: 5-10, 10-15, 15-20, 20-25, 25-30, 30-35 Frequency: 2, k, 28, 54, k+1, 5 is 21, then k is one of the roots of the equation:
- A. 2x² − 23x − 10 = 0
- B. 4x² − 35x + 24 = 0
- C. 2x² − 19x − 10 = 0Correct answer
- D. 2x² − 35x + 98 = 0
Not yet checked by a person: transcribed from the official question paper and matched against NTA’s official answer key by the question’s own ID on , never worked out independently. Spotted a mistake? Tell us and we’ll fix it. No explanation is published here yet.
Official source
Published by NTA. Last checked against this source on . Where the two disagree, the official notice is correct — tell us and we will fix it.
Question paper, page 4.