Challenge Prelims V1.0 – Day 3 – CSAT Paper

1. a, b, c and d are four distinct natural numbers. If the result of the expression

(a + b) × (c + d) is an odd number, then which of the following statements are true?

Statement 1: a and b can be both odd numbers

Statement 2: c and d can be both even numbers

Statement 3: one number among a and b will be definitely even

Statement 4: one number among c and d will be definitely odd

Which of the above given statements are correct?

2. Consider two three digit numbers ABC and DEF. When ABC is added to DEF we get another three digit number GHI. A, B, C, D, E, F, G, H and I are distinct digits and GHI = 590. If C=3, then what is the value of (A + D) × B

3. Gopika started typing from 1. She typed till 25 and then gave balance work to Bhavana. If Bhavana typed a total of 208 digits, find that last number typed by Bhavana.

4. If a + b – c is positive, then which of the following is not a possibility?

5. ‘x’ is a prime number greater than 3. When ‘x’ is divided by 6, the remainder obtained is ‘r’. Then which of the following is true?