Find the value of (6561)0.25
⇒6561=38
(6561)0.25=(6561)1/4
=(38)1/4
=(3)8/4
=32=9
Without adding find the sum
(i) 1 + 3 + 5 + 7 + 9
(ii) 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19
(iii) 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23
The line through (h, 3) and (4, 1) intersects the line 7x−9y−19=0 at right angle. Find the value of h.