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The digit in the unit’s place of [(251)98 + (21)29 – (106)100 + (705)35 – 164 + 259] is :
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- 1
- 4
- 5
- 6
Correct Option: B
As we know from the formula the Unit place of
(251)98 = ......1
(21)29 = ......1
(106)100 = ......6
(705)35 = ......5
(16)4 = ........6
259 = ......9
∴ Required answer = 1 + 1 – 6 + 5 – 6 + 9 = 16 – 12 = 4
