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Questions and Answers
What is the unit's digit of the expression $(795 - 358)$?
What is the unit's digit of the expression $(795 - 358)$?
- 4 (correct)
- 7
- 6
- 0
What is the remainder when a number made up of 100 repeating '6's is divided by 7?
What is the remainder when a number made up of 100 repeating '6's is divided by 7?
- 0
- 3 (correct)
- None
- 5
What are the last two digits of the sum of the factorials of all prime numbers less than 100?
What are the last two digits of the sum of the factorials of all prime numbers less than 100?
- 2, 8
- 4, 6
- 25
- 32 (correct)
What is the unit's digit of the product $25 imes 35 imes ...$?
What is the unit's digit of the product $25 imes 35 imes ...$?
What is the result of the calculation $795 - 358$?
What is the result of the calculation $795 - 358$?
Flashcards
Units Digit
Units Digit
The rightmost digit of a number. For example, the units digit of 345 is 5.
Remainder
Remainder
The amount left over after a division. For example, the remainder when 10 is divided by 3 is 1, because 3 goes into 10 three times with 1 left over.
Factorial
Factorial
The product of all positive integers less than or equal to a given number. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.
Last Two Digits
Last Two Digits
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End of a Number
End of a Number
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