1.
(place value of 6 ) - (face value of 6)
= (6000 – 6) = 5994.
2.
(local value of 7) – (face value of 7)
= (70000 – 7) = 69993.
3.
Required difference = (700000 – 70) = 699930.
4.
Unit digit in the given product = unit digit in
(4x 8 x 7 x 3) = 2
5.
Unit digit in 7¹⁰⁵ = unit digit in [(7⁴)²⁶ x 7]
But, unit digit in (7⁴)²⁶ = 1
Unit digit in 7¹⁰⁵ = (1 x 7) = 7
6.
Unit digit in 3⁴ = 1 unit digit in (3⁴)¹⁶
= 1
