Quiz Discussion

The digit in unit’s place of the product 71 × 72 × ..... × 79 is

• 1]

  2

• 2]

  0

• 3]

  6

• 4]

  4

How many prime numbers exist in 6⁷ x 35³ x 11¹⁰?

• 1]

  23

• 2]

  27

• 3]

  30

• 4]

  29

It is being given that (2³² + 1) is completely divisible by a whole number. Which of the following numbers is completely divisible by this number?

• 1]

  (2¹⁶ + 1)

• 2]

  (2¹⁶ - 1)

• 3]

  (7 x 2²³)

• 4]

  (2⁹⁶ + 1)

The sum of first 45 natural numbers is:

• 1]

  1035

• 2]

  1280

• 3]

  2070

• 4]

  2140

One-quarter of one-seventh of land is sold for Rs. 30,000. What is the value of an eight thirty-fifth of load?

• 1]

  1922200

• 2]

  1842010

• 3]

  1936200

• 4]

  1922000

5358 x 51 = ?

• 1]

  273258

• 2]

  273268

• 3]

  273348

• 4]

  273358

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

• 1]

  75142

• 2]

  64851

• 3]

  5149

• 4]

  69993

What is the unit digit in 27^20?

• 1]

  1

• 2]

  2

• 3]

  3

• 4]

  4

Find the last unit digit of 55^5 ( Using Euler Theorem)

• 1] 4
• 2] 5
• 3] 3
• 4] 8

The sum of first 49 natural numbers is ?

• 1]

  1275

• 2]

  1225

• 3]

  1205

• 4]

  1185