Question

А.
(2 marks each)
→ 22, 19, 16,
Section -B
Answer the following in short : (Answer any 9 out of 12) (18)
(25) Given that HCF (306, 657) = 9 find (306, 657) L.C.M.
(26) Which term of the A.P. is 0
(27) Find the HCF using euclid's method : 144, 180 and 192.
(28) Find the roots and verify the relation x2 - 7x + 6 = 0
(29) Find the sum of 10 terms of 3, 13, 23,
(30) Given 15 cotA = 8, find cosA, COSECA
(31) h A ABC right angled at B, AB = 7cm,
AC - BC = 1cm. Determine value of tana, cosec C.
(32) The radii of two concentric circles of 41cm and 40cm.
A chord of the circle with bigger radius touches the circle
with smaller radius. Find the length of the chord.
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Answer 1

Answer:

26 . 0 th term of ap is 0

29. 3+13+23+33+43+53+63+73+83+93= 480