Quiz Discussion

A boy multiplied 987 by a certain number and obtained 559981 as his answer. If in the answer both 98 are wrong and the other digits are correct , then the correct answer would be :

• 1] 553681
• 2] 555181
• 3] 555681
• 4] 556581

What is the unit digit in 27^20?

• 1]

  1

• 2]

  2

• 3]

  3

• 4]

  4

217 X 217 + 183 X 183

• 1] 89302
• 2] 80578
• 3] 79992
• 4] 70283

Which one of the following numbers is exactly divisible by 11?

• 1]

  235641

• 2]

  245642

• 3]

  315624

• 4]

  415624

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

• 1] 5
• 2] 3
• 3] 2
• 4] 0

What will be remainder when (67⁶⁷ + 67) is divided by 68 ?

• 1]

  67

• 2]

  66

• 3]

  63

• 4]

  1

106 X 106 - 94 X 94

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

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

• 1]

  29800

• 2]

  30200

• 3]

  31600

• 4]

  28480

Find the last 2 digit of 7^85 (Using Euler Theorem)

• 1] 07
• 2] 77
• 3] 87
• 4] 97

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

• 1] 4
• 2] 5
• 3] 3
• 4] 8