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C
(
)
⌫
π
e
7
8
9
\(\div\)
\(\sqrt{\,}\)
\(a^{b}\)
4
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\(\times\)
\(\frac{a}{b}\)
ln
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cos
cos⁻¹
0
.
=
+
sin
sin⁻¹
←
→
!
tan
tan⁻¹
The following data shows the marks (out of 20) obtained by 9 students in a math exam:$$1,\;19,\;10,\;2,\;18,\;11,\;5,\;15,\;10$$Find the
interquartile range
of the marks.
7
8
9
+
4
5
6
-
1
2
3
*
C
0
.
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