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Friday, 9 October

JEE Main 2021 · MathsNumerical answerNumerical valueMediumMulti-step

JEE Main 25 July 2021, Shift 1, Maths Q86

Question 86 of 90 in this shift, Maths question 26 of 30, Section B.

Consider the following frequency distribution : Class : 10 - 20 | 20 - 30 | 30 - 40 | 40 - 50 | 50 - 60 Frequency : α\alpha | 110 | 54 | 30 | β\beta If the sum of all frequencies is 584 and median is 45, then ∣α−β∣|\alpha-\beta| is equal to _________.

The figure, in words

Frequency table: classes 10-20, 20-30, 30-40, 40-50, 50-60 with frequencies alpha, 110, 54, 30, beta.

Official answer

164

NTA final key.

Chapter
Statistics
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.