Quiz Discussion

If x is a whole number, then x²(x² - 1) is always divisible by

• 1]

  12

• 2]

  24

• 3]

  36

• 4]

  16

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

• 1] 5
• 2] 3
• 3] 2
• 4] 0

• 1] 1951609
• 2] 1981709
• 3] 18362619
• 4] 2031719

What is the unit digit { (6374)^1793 X (625)^317 X (341)^491 }

• 1] 1
• 2] 20
• 3] 7
• 4] 0

If the number 653ab is divisible by 90, then (a + b) = ?

• 1]

  3

• 2]

  4

• 3]

  5

• 4]

  6

Find the sum to 200 terms of the series 1 + 4 + 6 + 5 + 11 + 6 + ....

• 1]

  29800

• 2]

  30200

• 3]

  31600

• 4]

  28480

What least number must be added to 1056, so that the sum is completely divisible by 23 ?

• 1] 18
• 2] 21
• 3] 3
• 4] 2

107 x 107 + 93 x 93 = ?

• 1]

  19578

• 2]

  19418

• 3]

  21908

• 4]

  20098

The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and the 15 as remainder. What is the smaller number ?

• 1]

  295

• 2]

  240

• 3]

  270

• 4]

  360

The largest 4 digit number exactly divisible by 88 is:

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