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प्रश्न
Find the unit digit of 124128 × 126124
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उत्तर
In 124128, the unit digit of base 124 is 4 and the power is 128 ...(even power)
Therefore, unit digit of 124128 is 4
Also in 126124, the unit digit of base 126 is 6 and the power is 124 ...(even power)
Therefore, unit digit of 126124 is 6
Product of the unit digits = 6 × 6 = 36
∴ Unit digit of the 124128 × 126124 is 6.
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संबंधित प्रश्न
Unit digit of 124 × 36 × 980 is _____________
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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