Number system aptitude

Question 1

What is the unit digit of 7^95?

Accepted Answer

3

Answer

1

Answer

7

Answer

9

Question 2

What is the remainder when 2^100 is divided by 7?

Accepted Answer

2

Answer

1

Answer

4

Answer

6

Question 3

What is the largest 4-digit number exactly divisible by 12, 18 and 30?

Accepted Answer

9900

Answer

9720

Answer

9960

Answer

9990

Question 4

The HCF of two numbers is 12 and their product is 4320. What is their LCM?

Accepted Answer

360

Answer

240

Answer

300

Answer

432

Question 5

What is the smallest three-digit number that leaves a remainder of 2 when divided by 4, 6, 10 and 15?

Accepted Answer

122

Answer

62

Answer

182

Answer

120

Question 6

The five-digit number 73x46 is divisible by 9. What is the digit x?

Accepted Answer

7

Answer

4

Answer

2

Answer

9

Question 7

How many positive factors does 360 have?

Accepted Answer

24

Answer

18

Answer

20

Answer

36

Question 8

What is the remainder when 17 × 23 × 29 is divided by 12?

Accepted Answer

11

Answer

5

Answer

7

Answer

1