Question

W
What is the unit digit in the product (7105 *365)?
09
0 1
07
O 3
A man is 24 years older than his son. In two years his age will be twice the
ago
of!
present age of his son is?​

Answer 1

Answer:

Thus, the last digit of 7²⁹⁵ is equal to the last digit of 7³ i.e. 3. Let's divide 158 by 4, the remainder is 2. Hence the last digit will be 9. Therefore, unit's digit of (7⁹²⁵ X 3¹⁵⁸) is unit's digit of product of digit at unit's place of 7⁹²⁵ and 3¹⁵⁸ = 3 * 9 = 27.