(i) 2 − √5 (ii) (3 + √23) − √23 (iii) 2√7 / 7√7 (iv) 1/√2 (v) 2π Math’s NCERT Class 9 Chapter 1 Number System Page No. 24 Exercise 1.4 Question No. 1
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(i) 8? (ii)A student argues that ‘there are 11 possible outcomes 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12. Therefore, each of them has a probability 1/11. Do you agree with this argument? Justify your answer.
Determine the modal lifetimes of the components. NCERT Class 10 Math’s Chapter 14 Statistics NCERT Textbook Page No. 275 Exercise 14.2 Question No. 2
Find the mode and the mean of the data given above. Compare and interpret the two measures of central tendency. NCERT Math’s Class 10 Chapter 14 Statistics Page No. 275 Exercise 14.2 Queston No. 1
Find the mean number of days a student was absent. Class 10 NCERT Maths Chapter 14 NCERT Book Page No. 271 Exercise 14.1 and Question No. 8