Challenge Prelims V1.0 – Day 6 – CSAT Paper

1. An 8 digit number 4252746B leaves remainder 0 when divided by 3. How many values of B are possible? (UPSC 2019)

2. How many five-digit numbers divisible by 4 can be formed using digits 5, 4, 3, 2 and 1 without repetition?

3. Placing which of the following two digits at the right end of 4530 makes the resultant six digit number divisible by 6, 7 and 9?

4. A number 4P352Q4 is divisible 88. Then which of the following is a possible value of P and Q respectively

5. Consider the Question and two statements given below:

Question: What is x?

Statement 1: x is a prime number between 20 and 30

Statement 2: x when divided by 4, leaves a remainder 3