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प्रश्न
Find the unit digit of expanded form.
2921
योग
उत्तर
2921
Unit digit of base 29 is 9 and power is 21 ...(odd power).
Therefore, unit digit of 2921 is 9.
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Unit Digit of Numbers in Exponential Form
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संबंधित प्रश्न
If a = 3 and b = 2, then find the value of the following.
(a + b)b
When the unit digit of the base and its expanded form of that number is 9, then the exponent must be ____________ power.
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 |
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