120o
110o
105o
102o
100o
Correct answer is B
An hexagon polygon is a six sided polygon
n = 6
sum of all interior angles of hexagon polygon will be (2n - 4) x 90o
= [2 x 6 - 4] x 90
= 720o
If one angle is 170o and each of the remaining five angles is 5xo
5xo + 170o = 720o
= 5x + 550
x = 5505
= 110o
Factorize completely 81a4 - 16b4
(3a + 2b)(2a - 3b)(9a2 + 4b2)
(3a - 2b)(2a - 3b)(4a2 - 9b2)
(3a - 2b)(3a + 2b)(9a2 + 4b2)
(6a - 2b)(8a - 3b)(4a3 - 9b2)
Correct answer is C
81a4 - 16b4 = (9a2)2 - (4b2)2
= (9a2 + 4b2)(9a2 - 4b2)
N:B 9a2 - 4b2 = (3a - 2b)(3a + 2b)
Without using tables find the numerical value of log749 + log7(17)
1
2
3
7
9
Correct answer is A
log749 + log717
= log77
= 1
If (23)m(34)n=256729, find the values of m and n.
m = 4, n = 2
m = -4, n = -2
m = -4, n =2
m = 4, n = -2
m = -2, n = 4
Correct answer is D
(23)m (34)n = 256729
2m4n x 3n3m = 2836
2m÷22n=28;3n÷3m=3−6
m - 2n = 8........(i)
-m + n = -6........(ii)
Solving the equations simultaneously
m = 4, n = -2