Quiz Discussion

The largest natural number which exactly divides the product of any four consecutive natural numbers is:

• 1]

  6

• 2]

  12

• 3]

  18

• 4]

  24

The largest 4 digit number exactly divisible by 88 is:

• 1] 8888
• 2] 9944
• 3] 9768
• 4] 8888

72519 X 9999

• 1] 725117481
• 2] 834782931
• 3] 747829383
• 4] 648392011

The sum of first 45 natural numbers is:

• 1]

  1035

• 2]

  1280

• 3]

  2070

• 4]

  2140

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

• 1]

  2

• 2]

  0

• 3]

  6

• 4]

  4

106 X 106 - 94 X 94

• 1] 9440
• 2] 9600
• 3] 9640
• 4] 9755

If (64)² - (36)² = 20 x a, then a = ?

• 1]

  115

• 2]

  140

• 3]

  132

• 4]

  176

The smallest value of n, for which 2n+1 is not a prime number, is

• 1]

  3

• 2]

  4

• 3]

  5

• 4]

  6

Find the number of factors of 9321.

• 1]

  6

• 2]

  8

• 3]

  12

• 4]

  14

If the number 481 * 673 is completely divisible by 9, then the smallest whole number in place of * will be:

• 1]

  4

• 2]

  5

• 3]

  6

• 4]

  7