Find the number of positive divisors of 192.
Correct answer(s):
- 14
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Find the remainder when 9^157 is divided by 19.
Correct answer(s):
- 6
Find the LCM of 14, 45, and 33.
Correct answer(s):
- 6930
Determine the GCD of 175 and 84 without using prime factor tables.
Correct answer(s):
- 7
Find 30% of 791.
Correct answer(s):
- 2373/10
Reduce the fraction 20/96 to lowest terms.
Correct answer(s):
- 5/24
What is the remainder when 8299 is divided by 12?
Correct answer(s):
- 7
Evaluate 48^2 − 30^2 using an arithmetic identity.
Correct answer(s):
- 1404
Find the sum of the arithmetic sequence 48, 53, 58, …, 133.
Correct answer(s):
- 1629
How many integers from 1 to 63 are coprime to 63?
Correct answer(s):
- 36
What is the units digit of 17^381?
Correct answer(s):
- 7
Calculate the number of trailing zeros in 320!.
Correct answer(s):
- 78
Find the number of positive divisors of 60.
Correct answer(s):
- 12
Find the remainder when 17^91 is divided by 7.
Correct answer(s):
- 3
Find the LCM of 35, 38, and 43.
Correct answer(s):
- 57190
Determine the GCD of 171 and 84 without using prime factor tables.
Correct answer(s):
- 3
Find 20% of 166.
Correct answer(s):
- 166/5
Reduce the fraction 15/44 to lowest terms.
Correct answer(s):
- 15/44
What is the remainder when 4886 is divided by 6?
Correct answer(s):
- 2
Evaluate 132^2 − 90^2 using an arithmetic identity.
Correct answer(s):
- 9324