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Byju's Answer
Standard VII
Mathematics
Comparison of Quantities Using Exponents
If a = 8× 10^...
Question
If a =
8
×
10
3
and b =
4
×
10
−
2
then ratio a : b = 200000 : 1
A
True
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B
False
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Q.
If
13
-
a
10
=
8
+
5
,
then
a
=
(a) −5
(b) −6
(c) −4
(d) −2