Quick Quiz on Number System

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Question 1

Find the last digit of ×

• A4
• B6
• C2
• D8

Question 2

Find the maximum power of 9 in 121!

• A18
• B14
• C16
• D17
• E15

Question 3

A certain number written in a certain base is 144. Which of the following is always true?
I. Square root of the number written in the same base is 12
II. If base is increased by 2, the number becomes 100

• AOnly I
• BOnly II
• CNeither I nor II
• DBoth I and II

Question 4

Which of the terms 2^1/3, 3^1/4, 4^1/6, 6^1/8 and 10^1/12 is the largest ?

• A2^1/3
• B3^1/4
• C4^1/6
• D10^1/12

Question 5

The question is followed by two statements, I and II.
If x, y and z are real numbers, is (z – x) even or odd?
I. xyz is odd.
II. xy + yz + zx is even.
Mark the answer as.

• Aif the question can be answered with the help of statement I alone.
• Bif the question can be answered with the help of statement II, alone.
• Cif both statement I and statement II are needed to answer the question.
• Dif the question cannot be answered even with the help of both the statements.

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