Advertisements
Advertisements
Question
Find the unit digit of the following numeric expression.
1000010000 + 1111111111
Solution
1000010000 + 1111111111
In 1000010000 the unit digit of base 10000 is 0 and power is 10000
Unit digit of 1000010000 is 0
In 1111111111 the unit digit of base 11111 is 1 and power is 11111
Unit digit of 1111111111 is 1
Unit digit of 1000010000 + 1111111111 is 0 + 1 = 1
APPEARS IN
RELATED QUESTIONS
If a = 3 and b = 2, then find the value of the following.
(a – b)a
Match the following:
Group A Exponential form |
Group B Unit digit of the number |
(i) 2010 | (a) 6 |
(ii) 12111 | (b) 4 |
(iii) 44441 | (c) 0 |
(iv) 25100 | (d) 1 |
(v) 71683 | (e) 9 |
(vi) 729725 | (f) 5 |
Find the unit digit of expanded form.
2523
Find the unit digit of expanded form.
1110
Find the unit digit of expanded form.
10012
Find the unit digit of expanded form.
2921
Find the unit digit of expanded form.
2425
Find the unit digit of the following numeric expression.
11420 + 11521 + 11622
Observe the equation (10 + y)4 = 50625 and find the value of y
The unit digit of the numeric expression 1071 + 1072 + 1073 is