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The units digit of the expression 256251 + 36528 + 7354 is
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- 6
- 5
- 4
- 0
Correct Option: D
Unit digit in the expansion of 256251
= Unit digit in the expansion of 56251 = 5
36528 ≡ Unit digit in 6528 = 6
Now, 31 = 3,
32 = 9,
33 = 27 ;
34 = 81,
35 = 243....
∴ 7354 = 7352 × 732
≡ 32 = 9
∴ Required digit = Unit’s digit of the sum 5 + 6 + 9 = 0
