bn = bm when ?
a) b = bm
b) bn = b
c) m = n
d) n ≠ m
Find the value of x when 4, x and 9 are in continued
proportion:
a) 6
b) 36
c) 16
d) 30
Explanation: 4, x and 9 are in continued proportion, therefore 4 : x = x : 9
x2 = 36 x2 = 62 x = 6
The arithmetic mean of first 5 positive integers is:
a) 3
b) 4
c) 5
d) 0
1/ =
___________seconds.
a) 60
b) 36
c) 24
d) 360
Explanation: In one minute there are 60 seconds.
(a
+ b)² - (a - b)² is equal to……
a) 2ab
b) a2 – b2
c) 4ab
d) a2 + b2
