Find the value of m, if (−10)m+1 × (−10)5 = (−10)7.
-1
1
2
3
(−10)m+1× (−10)5 = (−10)7
⇒(−10)m+1+5 = (−10)7 [∵am×an = a(m+n)]
⇒(−10)m+6 = (−10)7
Since their bases are equal, their exponents must be equal.
⇒ m + 6 = 7
⇒ m = 7 – 6 = 1
From the prices of shares X and Y given below : find out which is more stable in value :
X:35545253565852505149Y:108107105105106107104103104101
From the prices of shares X and Y below, find out which is more stable in value:
X
35
54
52
53
56
58
50
51
49
Y
108
107
105
106
104
103
101