Quiz on Number System

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Question 1

At certain area the base system n is used(n>3).A worker in that area received thrice his wage on that day because of digits of wage was reversed(2 digit number).Find his actual wage in base 10 for least value of n?

• A10
• B11
• C12
• D13
• Enone

Question 2

If +=2,6x+6y=-84
Find x&y

• A-19/2,-16/3
• B15/3,19/2
• C19/2,15/3
• Dnone

Question 3

The rightmost non-zero digit of the number 30²⁷²⁰ is

• A1
• B3
• C7
• D9

Question 4

Find the sum of number of factors and number of odd factors for number 2223936000?

• A1120
• B5598
• C3212
• D1450
• E1056

Question 5

Let a, b, c, d and e be integers such that a = 6b = 12c, and 2b = 9d = 12e. Then which of the following pairs contains a number that is not an integer?

• A
• B
• C
• D

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