Question
Find the unit digit of the expression: 1! + 2! + 3! +
4! + 5! + ........ + 2027!.Solution
1! = 1 2! = 1 X 2 = 2 3! = 1 X 2 X 3 = 6 4! = 1 X 2 X 3 X 4 = 24 5! = 1 X 2 X 3 X 4 X 5 = 120 6! = 1 X 2 X 3 X 4 X 5 X 6 = 720 Here, we can observe that the unit-digit of numbers larger than 4! Is 0. So, unit digit of the given expression, 1! + 2! + 3! + 4! + 5! + ........ + 2027! = unit digit of (1 + 2 + 6 + 4 + 0) = unit digit of 13 Required unit digit = 3
MALDA gap separates?
The Gandhara art – a style of Buddhist visual art that developed between 1st century BCE the 7th century CE, flourished larg...
Consider the following statements in the context of Buddhist literature:
1. None of the Buddha’s speeches were written down during his lifetime...
Who wrote the national anthem, Jana Gana Mana?
Consider the following statements:
1. Charvaka was the main expounder of this philosophy.
2. The philosophy is materialistic in nature.
The main source of information about Harappan culture is-
The rule of the Mughals was established after the
Combine List-I and List-II and select the correct answer from the code given below
Narendranath Dutt is the real name of which of the following Great Personalities of India?
Recently, the Government of India gave the approval to administer Remdesivir for emergency use in patients suffering from COVID-19. In this context, con...
