1. I multiplied a natural number by 18 and another by 21 and added the products. Which one of the following could be the sum? (1)
- 1. 2007
- 2. 2008
- 3. 2006
- 4. 2002
2. Out of six consecutive natural numbers, if the sum of first three is 27, what is the sum of the other three ? (1)
- 1. 36
- 2. 35
- 3. 25
- 4. 24
3. Which one of the following is a factor of the sum of first 25 natural numbers ? (3)
- 1. 26
- 2. 24
- 3. 13
- 4. 12
4. The sum of all the natural numbers from 51 to 100 is (4)
- 1. 5050
- 2. 4275
- 3. 4025
- 4. 3775
5. The unit digit in the sum of (124)³⁷⁶+(124)³⁷⁵ is (4)
- 1. 5
- 2. 4
- 3. 2
- 4. 0