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Subjects
Mathematics State Board
Class 7
Algebra
Unit Digit of Numbers and Degree of Expressions
1.
One mark exercise problems I
Exercise condition:
3
m.
1
. Observe the equation
(10 + y)^4 = 50625
and find the
value
of
y
.
5
0
4
1
2
. The
unit digit
of
(32 \times 65)^0
is
2
0
5
1
.
3
. The
unit digit
of the numeric expression
10^{71} + 10^{72} + 10^{73}
is
2
0
3
1
.
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