Number System 1

How Many prime numbers are there in between 50 to 70

• 4

• 5

• 3

• 6

What least digit should come in place of # in the 9 digit number 15549#325, for which the number is divisible by 3?

• 0

• 1

• 2

• 3

What is the unit digit in {(6374)¹⁷⁹³ x (625)³¹⁷ x (341⁴⁹¹)}?

• 0

• 2

• 3

• 5

The sum of first five prime numbers is:

• 11

• 18

• 26

• 28

Which of the following number is divisible by 24 ?

• 35718

• 63810

• 537804

• 3125736

The difference between the Place value and the face value of 7 in the numeral 32675149 is

• 69993

• 5149

• 64851

• 75142

If the number 97215?6 is completely divisible by 11, then the smallest whole number in place of ? will be:

• 3

• 2

• 1

• 5

If the number 42573? is exactly divisible by 72, then the minimum value of ? is:

• 5

• 4

• 6

• 7

When 0.4747474747.....  is converted into a fraction, the result is:

• 47/99

• 46/99

• 47/90

• 46/99

Which of the following is a pair of co-primes?

• (16, 62)

• (18, 24)

• (21, 27)

• (23, 92)