Question 15 and 17 (Ans-
- respectively
e probability ti
[Ans.
then what is t
[Ans_ e
.•Cle Of radius
IAns-op-
{Ars_ d
O more than its
md Find
Questions number 13 to 22 each.
an altitude of an equilateral triangle ABC. On AD as base, another equilateral
triangle ADE is constructed. Prove that (AADE) : 3 4.
Q-i4.
l'rove that
an irrational number.
Q.15.
the given figure, AB 1 EC, FG UC and DE l.
Prove that LADE - AGCF_
Q.16. Find the missing frequencies and q in the following frequency distribution table, if
N = 100 and median is 32.
„FMarks obtained
0-10
10-20
20-30 30-40 40-50
10
25
30
100
10
First missing frequency (p) 9; Second missing frequency (q) " 161
Q.17
. ShOW that any positive Odd integer is Of the form 40 | and 4q + 3 where q a positive
integer.
Q.18. The centre of a circle ig (a 4 2, a — 1), Find the value of n if the circle passes through (2, -2)
.31
and (8, —2).
. The area Of a circle is 220 cml. Find the area Of a square wlura.• vertices are on circle,
019
140
