**Question 1:**

Convert the number 1982 from base 10 to base 12. The result is

Topic: Base System

[1] 1182

[2] 1912

[3] 1192

[4] 1292

**Question 2:**

Let x, y and z be distinct integers. x and y are odd and positive, and z is even and positive. Which one of the following statements cannot be true?

Topic: Basics

[1] y(x – z)

^{2}is even

[2] y

^{2}(x – z) is odd

[3] y(x – z) is odd

[4] z(x – y)

^{2}is even

**Question 3:**

A red light flashes three times per minute and a green light flashes five times in 2 min at regular intervals.If both lights start flashing at the same time, how many times do they flash together in each hour?

Topic: HCF LCM

[1] 30

[2] 24

[3] 20

[4] 60

**Question 4:**

In a four-digit number, the sum of the first 2 digits is equal to that of the last 2 digits. The sum of the first and last digits is equal to the third digit. Finally, the sum of the second and fourth digits is twice the sum of the other 2 digits. What is the third digit of the number?

Topic: Digits

[1] 5

[2] 8

[3] 1

[4] 4

**Question 5:**

Anita had to do a multiplication. Instead of taking 35 as one of the multipliers, she took 53. As a result, the product went up by 540. What is the new product?

Topic: Basics

[1] 1050

[2] 540

[3] 1440

[4] 1590

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