Question

plz refer to the pic above.


Only ans. the (iii) part.
Ans. sooner exams tomorrow

Answer 1

$mode \: = l + \frac{f1 - f0}{2f1 - f0 - f2} \times h \\ = 144.5 + \frac{12 - 9}{2 \times 12 - 9 - 5} \times 9 \\ = 144.5 + \frac{3}{10} \times 9 \\ = 144.5 + 2.7 \\ = 147.2 \\ maximum \: no. \: of \: leaves \: are \: of \: 147.2mm \: long$